From 46243860806bdc2756f3ce8ac86b4d7c616bcd6c Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Sun, 21 Dec 2014 10:42:08 -0800 Subject: [PATCH 1/7] vhost-scsi: Add missing virtio-scsi -> TCM attribute conversion While looking at hch's recent conversion to drop the MSG_*_TAG definitions, I noticed a long standing bug in vhost-scsi where the VIRTIO_SCSI_S_* attribute definitions where incorrectly being passed directly into target_submit_cmd_map_sgls(). This patch adds the missing virtio-scsi to TCM/SAM task attribute conversion. Cc: Christoph Hellwig Cc: Michael S. Tsirkin Cc: Paolo Bonzini Cc: stable@vger.kernel.org # 3.5 Signed-off-by: Nicholas Bellinger --- drivers/vhost/scsi.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 01c01cb3933f..d695b1673ae5 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -911,6 +911,23 @@ vhost_scsi_map_iov_to_prot(struct tcm_vhost_cmd *cmd, return 0; } +static int vhost_scsi_to_tcm_attr(int attr) +{ + switch (attr) { + case VIRTIO_SCSI_S_SIMPLE: + return TCM_SIMPLE_TAG; + case VIRTIO_SCSI_S_ORDERED: + return TCM_ORDERED_TAG; + case VIRTIO_SCSI_S_HEAD: + return TCM_HEAD_TAG; + case VIRTIO_SCSI_S_ACA: + return TCM_ACA_TAG; + default: + break; + } + return TCM_SIMPLE_TAG; +} + static void tcm_vhost_submission_work(struct work_struct *work) { struct tcm_vhost_cmd *cmd = @@ -936,9 +953,10 @@ static void tcm_vhost_submission_work(struct work_struct *work) rc = target_submit_cmd_map_sgls(se_cmd, tv_nexus->tvn_se_sess, cmd->tvc_cdb, &cmd->tvc_sense_buf[0], cmd->tvc_lun, cmd->tvc_exp_data_len, - cmd->tvc_task_attr, cmd->tvc_data_direction, - TARGET_SCF_ACK_KREF, sg_ptr, cmd->tvc_sgl_count, - NULL, 0, sg_prot_ptr, cmd->tvc_prot_sgl_count); + vhost_scsi_to_tcm_attr(cmd->tvc_task_attr), + cmd->tvc_data_direction, TARGET_SCF_ACK_KREF, + sg_ptr, cmd->tvc_sgl_count, NULL, 0, sg_prot_ptr, + cmd->tvc_prot_sgl_count); if (rc < 0) { transport_send_check_condition_and_sense(se_cmd, TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0); From 67e51daa5029417db86f1833f1b7b2212c454fe9 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 23 Dec 2014 00:32:21 -0800 Subject: [PATCH 2/7] Documentation/target: Update fabric_ops to latest code This patch updates tcm_mod_builder.py to add/drop a handful of struct target_core_fabric_ops functions to sync up with the latest requirements to function in target_fabric_tf_ops_check(). Signed-off-by: Nicholas Bellinger --- Documentation/target/tcm_mod_builder.py | 49 ++++++------------------- 1 file changed, 12 insertions(+), 37 deletions(-) diff --git a/Documentation/target/tcm_mod_builder.py b/Documentation/target/tcm_mod_builder.py index 230ce71f4d75..2b47704f75cb 100755 --- a/Documentation/target/tcm_mod_builder.py +++ b/Documentation/target/tcm_mod_builder.py @@ -389,9 +389,6 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name): buf += " .release_cmd = " + fabric_mod_name + "_release_cmd,\n" buf += " .shutdown_session = " + fabric_mod_name + "_shutdown_session,\n" buf += " .close_session = " + fabric_mod_name + "_close_session,\n" - buf += " .stop_session = " + fabric_mod_name + "_stop_session,\n" - buf += " .fall_back_to_erl0 = " + fabric_mod_name + "_reset_nexus,\n" - buf += " .sess_logged_in = " + fabric_mod_name + "_sess_logged_in,\n" buf += " .sess_get_index = " + fabric_mod_name + "_sess_get_index,\n" buf += " .sess_get_initiator_sid = NULL,\n" buf += " .write_pending = " + fabric_mod_name + "_write_pending,\n" @@ -402,7 +399,7 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name): buf += " .queue_data_in = " + fabric_mod_name + "_queue_data_in,\n" buf += " .queue_status = " + fabric_mod_name + "_queue_status,\n" buf += " .queue_tm_rsp = " + fabric_mod_name + "_queue_tm_rsp,\n" - buf += " .is_state_remove = " + fabric_mod_name + "_is_state_remove,\n" + buf += " .aborted_task = " + fabric_mod_name + "_aborted_task,\n" buf += " /*\n" buf += " * Setup function pointers for generic logic in target_core_fabric_configfs.c\n" buf += " */\n" @@ -428,7 +425,7 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name): buf += " /*\n" buf += " * Register the top level struct config_item_type with TCM core\n" buf += " */\n" - buf += " fabric = target_fabric_configfs_init(THIS_MODULE, \"" + fabric_mod_name[4:] + "\");\n" + buf += " fabric = target_fabric_configfs_init(THIS_MODULE, \"" + fabric_mod_name + "\");\n" buf += " if (IS_ERR(fabric)) {\n" buf += " printk(KERN_ERR \"target_fabric_configfs_init() failed\\n\");\n" buf += " return PTR_ERR(fabric);\n" @@ -595,7 +592,7 @@ def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name): if re.search('get_fabric_name', fo): buf += "char *" + fabric_mod_name + "_get_fabric_name(void)\n" buf += "{\n" - buf += " return \"" + fabric_mod_name[4:] + "\";\n" + buf += " return \"" + fabric_mod_name + "\";\n" buf += "}\n\n" bufi += "char *" + fabric_mod_name + "_get_fabric_name(void);\n" continue @@ -820,27 +817,6 @@ def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name): buf += "}\n\n" bufi += "void " + fabric_mod_name + "_close_session(struct se_session *);\n" - if re.search('stop_session\)\(', fo): - buf += "void " + fabric_mod_name + "_stop_session(struct se_session *se_sess, int sess_sleep , int conn_sleep)\n" - buf += "{\n" - buf += " return;\n" - buf += "}\n\n" - bufi += "void " + fabric_mod_name + "_stop_session(struct se_session *, int, int);\n" - - if re.search('fall_back_to_erl0\)\(', fo): - buf += "void " + fabric_mod_name + "_reset_nexus(struct se_session *se_sess)\n" - buf += "{\n" - buf += " return;\n" - buf += "}\n\n" - bufi += "void " + fabric_mod_name + "_reset_nexus(struct se_session *);\n" - - if re.search('sess_logged_in\)\(', fo): - buf += "int " + fabric_mod_name + "_sess_logged_in(struct se_session *se_sess)\n" - buf += "{\n" - buf += " return 0;\n" - buf += "}\n\n" - bufi += "int " + fabric_mod_name + "_sess_logged_in(struct se_session *);\n" - if re.search('sess_get_index\)\(', fo): buf += "u32 " + fabric_mod_name + "_sess_get_index(struct se_session *se_sess)\n" buf += "{\n" @@ -898,19 +874,18 @@ def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name): bufi += "int " + fabric_mod_name + "_queue_status(struct se_cmd *);\n" if re.search('queue_tm_rsp\)\(', fo): - buf += "int " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *se_cmd)\n" + buf += "void " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *se_cmd)\n" buf += "{\n" - buf += " return 0;\n" + buf += " return;\n" buf += "}\n\n" - bufi += "int " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *);\n" + bufi += "void " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *);\n" - if re.search('is_state_remove\)\(', fo): - buf += "int " + fabric_mod_name + "_is_state_remove(struct se_cmd *se_cmd)\n" + if re.search('aborted_task\)\(', fo): + buf += "void " + fabric_mod_name + "_aborted_task(struct se_cmd *se_cmd)\n" buf += "{\n" - buf += " return 0;\n" + buf += " return;\n" buf += "}\n\n" - bufi += "int " + fabric_mod_name + "_is_state_remove(struct se_cmd *);\n" - + bufi += "void " + fabric_mod_name + "_aborted_task(struct se_cmd *);\n" ret = p.write(buf) if ret: @@ -1018,11 +993,11 @@ def main(modname, proto_ident): tcm_mod_build_kbuild(fabric_mod_dir, fabric_mod_name) tcm_mod_build_kconfig(fabric_mod_dir, fabric_mod_name) - input = raw_input("Would you like to add " + fabric_mod_name + "to drivers/target/Makefile..? [yes,no]: ") + input = raw_input("Would you like to add " + fabric_mod_name + " to drivers/target/Makefile..? [yes,no]: ") if input == "yes" or input == "y": tcm_mod_add_kbuild(tcm_dir, fabric_mod_name) - input = raw_input("Would you like to add " + fabric_mod_name + "to drivers/target/Kconfig..? [yes,no]: ") + input = raw_input("Would you like to add " + fabric_mod_name + " to drivers/target/Kconfig..? [yes,no]: ") if input == "yes" or input == "y": tcm_mod_add_kconfig(tcm_dir, fabric_mod_name) From 046ba64285a4389ae5e9a7dfa253c6bff3d7c341 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 6 Jan 2015 16:10:37 -0800 Subject: [PATCH 3/7] target: Drop arbitrary maximum I/O size limit This patch drops the arbitrary maximum I/O size limit in sbc_parse_cdb(), which currently for fabric_max_sectors is hardcoded to 8192 (4 MB for 512 byte sector devices), and for hw_max_sectors is a backend driver dependent value. This limit is problematic because Linux initiators have only recently started to honor block limits MAXIMUM TRANSFER LENGTH, and other non-Linux based initiators (eg: MSFT Fibre Channel) can also generate I/Os larger than 4 MB in size. Currently when this happens, the following message will appear on the target resulting in I/Os being returned with non recoverable status: SCSI OP 28h with too big sectors 16384 exceeds fabric_max_sectors: 8192 Instead, drop both [fabric,hw]_max_sector checks in sbc_parse_cdb(), and convert the existing hw_max_sectors into a purely informational attribute used to represent the granuality that backend driver and/or subsystem code is splitting I/Os upon. Also, update FILEIO with an explicit FD_MAX_BYTES check in fd_execute_rw() to deal with the one special iovec limitiation case. v2 changes: - Drop hw_max_sectors check in sbc_parse_cdb() Reported-by: Lance Gropper Reported-by: Stefan Priebe Cc: Christoph Hellwig Cc: Martin K. Petersen Cc: Roland Dreier Cc: stable@vger.kernel.org # 3.4 Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_device.c | 8 ++++---- drivers/target/target_core_file.c | 11 ++++++++++- drivers/target/target_core_iblock.c | 2 +- drivers/target/target_core_sbc.c | 15 --------------- drivers/target/target_core_spc.c | 5 +---- 5 files changed, 16 insertions(+), 25 deletions(-) diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 7653cfb027a2..ee4b89fb8841 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -1156,10 +1156,10 @@ int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) dev, dev->export_count); return -EINVAL; } - if (optimal_sectors > dev->dev_attrib.fabric_max_sectors) { + if (optimal_sectors > dev->dev_attrib.hw_max_sectors) { pr_err("dev[%p]: Passed optimal_sectors %u cannot be" - " greater than fabric_max_sectors: %u\n", dev, - optimal_sectors, dev->dev_attrib.fabric_max_sectors); + " greater than hw_max_sectors: %u\n", dev, + optimal_sectors, dev->dev_attrib.hw_max_sectors); return -EINVAL; } @@ -1554,7 +1554,6 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS; - dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS; xcopy_lun = &dev->xcopy_lun; xcopy_lun->lun_se_dev = dev; @@ -1595,6 +1594,7 @@ int target_configure_device(struct se_device *dev) dev->dev_attrib.hw_max_sectors = se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, dev->dev_attrib.hw_block_size); + dev->dev_attrib.optimal_sectors = dev->dev_attrib.hw_max_sectors; dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); dev->creation_time = get_jiffies_64(); diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c index c2aea099ea4a..b09021135c3b 100644 --- a/drivers/target/target_core_file.c +++ b/drivers/target/target_core_file.c @@ -621,7 +621,16 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, struct fd_prot fd_prot; sense_reason_t rc; int ret = 0; - + /* + * We are currently limited by the number of iovecs (2048) per + * single vfs_[writev,readv] call. + */ + if (cmd->data_length > FD_MAX_BYTES) { + pr_err("FILEIO: Not able to process I/O of %u bytes due to" + "FD_MAX_BYTES: %u iovec count limitiation\n", + cmd->data_length, FD_MAX_BYTES); + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + } /* * Call vectorized fileio functions to map struct scatterlist * physical memory addresses to struct iovec virtual memory. diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 3efff94fbd97..5795cd8ab5d9 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -124,7 +124,7 @@ static int iblock_configure_device(struct se_device *dev) q = bdev_get_queue(bd); dev->dev_attrib.hw_block_size = bdev_logical_block_size(bd); - dev->dev_attrib.hw_max_sectors = UINT_MAX; + dev->dev_attrib.hw_max_sectors = queue_max_hw_sectors(q); dev->dev_attrib.hw_queue_depth = q->nr_requests; /* diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index 11bea1952435..cd4bed7b2757 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -953,21 +953,6 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) if (cmd->se_cmd_flags & SCF_SCSI_DATA_CDB) { unsigned long long end_lba; - - if (sectors > dev->dev_attrib.fabric_max_sectors) { - printk_ratelimited(KERN_ERR "SCSI OP %02xh with too" - " big sectors %u exceeds fabric_max_sectors:" - " %u\n", cdb[0], sectors, - dev->dev_attrib.fabric_max_sectors); - return TCM_INVALID_CDB_FIELD; - } - if (sectors > dev->dev_attrib.hw_max_sectors) { - printk_ratelimited(KERN_ERR "SCSI OP %02xh with too" - " big sectors %u exceeds backend hw_max_sectors:" - " %u\n", cdb[0], sectors, - dev->dev_attrib.hw_max_sectors); - return TCM_INVALID_CDB_FIELD; - } check_lba: end_lba = dev->transport->get_blocks(dev) + 1; if (cmd->t_task_lba + sectors > end_lba) { diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 1307600fe726..4c71657da56a 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -505,7 +505,6 @@ static sense_reason_t spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) { struct se_device *dev = cmd->se_dev; - u32 max_sectors; int have_tp = 0; int opt, min; @@ -539,9 +538,7 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) /* * Set MAXIMUM TRANSFER LENGTH */ - max_sectors = min(dev->dev_attrib.fabric_max_sectors, - dev->dev_attrib.hw_max_sectors); - put_unaligned_be32(max_sectors, &buf[8]); + put_unaligned_be32(dev->dev_attrib.hw_max_sectors, &buf[8]); /* * Set OPTIMAL TRANSFER LENGTH From 7216dc077dfcd46e2e0143f57711c8dd2eb99e68 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 6 Jan 2015 16:15:01 -0800 Subject: [PATCH 4/7] target: Drop left-over fabric_max_sectors attribute Now that fabric_max_sectors is no longer used to enforce the maximum I/O size, go ahead and drop it's left-over usage in target-core and associated backend drivers. Cc: Christoph Hellwig Cc: Martin K. Petersen Cc: Roland Dreier Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_device.c | 46 ------------------- drivers/target/target_core_file.c | 1 - drivers/target/target_core_iblock.c | 1 - drivers/target/target_core_rd.c | 1 - drivers/target/target_core_user.c | 1 - include/target/target_core_backend.h | 1 - include/target/target_core_backend_configfs.h | 2 - include/target/target_core_base.h | 3 -- 8 files changed, 56 deletions(-) diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index ee4b89fb8841..58f49ff69b14 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -1103,51 +1103,6 @@ int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) } EXPORT_SYMBOL(se_dev_set_queue_depth); -int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) -{ - int block_size = dev->dev_attrib.block_size; - - if (dev->export_count) { - pr_err("dev[%p]: Unable to change SE Device" - " fabric_max_sectors while export_count is %d\n", - dev, dev->export_count); - return -EINVAL; - } - if (!fabric_max_sectors) { - pr_err("dev[%p]: Illegal ZERO value for" - " fabric_max_sectors\n", dev); - return -EINVAL; - } - if (fabric_max_sectors < DA_STATUS_MAX_SECTORS_MIN) { - pr_err("dev[%p]: Passed fabric_max_sectors: %u less than" - " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, fabric_max_sectors, - DA_STATUS_MAX_SECTORS_MIN); - return -EINVAL; - } - if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) { - pr_err("dev[%p]: Passed fabric_max_sectors: %u" - " greater than DA_STATUS_MAX_SECTORS_MAX:" - " %u\n", dev, fabric_max_sectors, - DA_STATUS_MAX_SECTORS_MAX); - return -EINVAL; - } - /* - * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() - */ - if (!block_size) { - block_size = 512; - pr_warn("Defaulting to 512 for zero block_size\n"); - } - fabric_max_sectors = se_dev_align_max_sectors(fabric_max_sectors, - block_size); - - dev->dev_attrib.fabric_max_sectors = fabric_max_sectors; - pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", - dev, fabric_max_sectors); - return 0; -} -EXPORT_SYMBOL(se_dev_set_fabric_max_sectors); - int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) { if (dev->export_count) { @@ -1553,7 +1508,6 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) dev->dev_attrib.unmap_granularity_alignment = DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; - dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS; xcopy_lun = &dev->xcopy_lun; xcopy_lun->lun_se_dev = dev; diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c index b09021135c3b..d836de200a03 100644 --- a/drivers/target/target_core_file.c +++ b/drivers/target/target_core_file.c @@ -968,7 +968,6 @@ static struct configfs_attribute *fileio_backend_dev_attrs[] = { &fileio_dev_attrib_hw_block_size.attr, &fileio_dev_attrib_block_size.attr, &fileio_dev_attrib_hw_max_sectors.attr, - &fileio_dev_attrib_fabric_max_sectors.attr, &fileio_dev_attrib_optimal_sectors.attr, &fileio_dev_attrib_hw_queue_depth.attr, &fileio_dev_attrib_queue_depth.attr, diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 5795cd8ab5d9..78346b850968 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -883,7 +883,6 @@ static struct configfs_attribute *iblock_backend_dev_attrs[] = { &iblock_dev_attrib_hw_block_size.attr, &iblock_dev_attrib_block_size.attr, &iblock_dev_attrib_hw_max_sectors.attr, - &iblock_dev_attrib_fabric_max_sectors.attr, &iblock_dev_attrib_optimal_sectors.attr, &iblock_dev_attrib_hw_queue_depth.attr, &iblock_dev_attrib_queue_depth.attr, diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c index 60ebd170a561..98e83ac5661b 100644 --- a/drivers/target/target_core_rd.c +++ b/drivers/target/target_core_rd.c @@ -657,7 +657,6 @@ static struct configfs_attribute *rd_mcp_backend_dev_attrs[] = { &rd_mcp_dev_attrib_hw_block_size.attr, &rd_mcp_dev_attrib_block_size.attr, &rd_mcp_dev_attrib_hw_max_sectors.attr, - &rd_mcp_dev_attrib_fabric_max_sectors.attr, &rd_mcp_dev_attrib_optimal_sectors.attr, &rd_mcp_dev_attrib_hw_queue_depth.attr, &rd_mcp_dev_attrib_queue_depth.attr, diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 8bfa61c9693d..1157b559683b 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -1118,7 +1118,6 @@ static struct configfs_attribute *tcmu_backend_dev_attrs[] = { &tcmu_dev_attrib_hw_block_size.attr, &tcmu_dev_attrib_block_size.attr, &tcmu_dev_attrib_hw_max_sectors.attr, - &tcmu_dev_attrib_fabric_max_sectors.attr, &tcmu_dev_attrib_optimal_sectors.attr, &tcmu_dev_attrib_hw_queue_depth.attr, &tcmu_dev_attrib_queue_depth.attr, diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h index 430cfaf92285..db81c65b8f48 100644 --- a/include/target/target_core_backend.h +++ b/include/target/target_core_backend.h @@ -135,7 +135,6 @@ int se_dev_set_is_nonrot(struct se_device *, int); int se_dev_set_emulate_rest_reord(struct se_device *dev, int); int se_dev_set_queue_depth(struct se_device *, u32); int se_dev_set_max_sectors(struct se_device *, u32); -int se_dev_set_fabric_max_sectors(struct se_device *, u32); int se_dev_set_optimal_sectors(struct se_device *, u32); int se_dev_set_block_size(struct se_device *, u32); diff --git a/include/target/target_core_backend_configfs.h b/include/target/target_core_backend_configfs.h index 3247d7530107..186f7a923570 100644 --- a/include/target/target_core_backend_configfs.h +++ b/include/target/target_core_backend_configfs.h @@ -98,8 +98,6 @@ static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name TB_DEV_ATTR(_backend, block_size, S_IRUGO | S_IWUSR); \ DEF_TB_DEV_ATTRIB_RO(_backend, hw_max_sectors); \ TB_DEV_ATTR_RO(_backend, hw_max_sectors); \ - DEF_TB_DEV_ATTRIB(_backend, fabric_max_sectors); \ - TB_DEV_ATTR(_backend, fabric_max_sectors, S_IRUGO | S_IWUSR); \ DEF_TB_DEV_ATTRIB(_backend, optimal_sectors); \ TB_DEV_ATTR(_backend, optimal_sectors, S_IRUGO | S_IWUSR); \ DEF_TB_DEV_ATTRIB_RO(_backend, hw_queue_depth); \ diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 397fb635766a..4a8795a87b9e 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -77,8 +77,6 @@ #define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0 /* Default max_write_same_len, disabled by default */ #define DA_MAX_WRITE_SAME_LEN 0 -/* Default max transfer length */ -#define DA_FABRIC_MAX_SECTORS 8192 /* Use a model alias based on the configfs backend device name */ #define DA_EMULATE_MODEL_ALIAS 0 /* Emulation for Direct Page Out */ @@ -694,7 +692,6 @@ struct se_dev_attrib { u32 hw_block_size; u32 block_size; u32 hw_max_sectors; - u32 fabric_max_sectors; u32 optimal_sectors; u32 hw_queue_depth; u32 queue_depth; From 1ecc7586922662e3ca2f3f0c3f17fec8749fc621 Mon Sep 17 00:00:00 2001 From: Lee Duncan Date: Mon, 5 Jan 2015 10:49:44 -0800 Subject: [PATCH 5/7] target: Allow Write Exclusive non-reservation holders to READ For PGR reservation of type Write Exclusive Access, allow all non reservation holding I_T nexuses with active registrations to READ from the device. This addresses a bug where active registrations that attempted to READ would result in an reservation conflict. Signed-off-by: Lee Duncan Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_pr.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index d56f2aaba9af..283cf786ef98 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -528,6 +528,18 @@ static int core_scsi3_pr_seq_non_holder( return 0; } + } else if (we && registered_nexus) { + /* + * Reads are allowed for Write Exclusive locks + * from all registrants. + */ + if (cmd->data_direction == DMA_FROM_DEVICE) { + pr_debug("Allowing READ CDB: 0x%02x for %s" + " reservation\n", cdb[0], + core_scsi3_pr_dump_type(pr_reg_type)); + + return 0; + } } pr_debug("%s Conflict for %sregistered nexus %s CDB: 0x%2x" " for %s reservation\n", transport_dump_cmd_direction(cmd), From 2b70e5fda9d569f1d45735884a9871c7fb1cedf6 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Wed, 7 Jan 2015 12:54:44 +0200 Subject: [PATCH 6/7] MAINTAINERS: Add entry for iSER target driver iSCSI extensions for RDMA - Target mode. Signed-off-by: Sagi Grimberg Signed-off-by: Nicholas Bellinger --- MAINTAINERS | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index ddb9ac8d32b3..6b989d3fe8f9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5279,6 +5279,15 @@ W: www.open-iscsi.org Q: http://patchwork.kernel.org/project/linux-rdma/list/ F: drivers/infiniband/ulp/iser/ +ISCSI EXTENSIONS FOR RDMA (ISER) TARGET +M: Sagi Grimberg +T: git git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending.git master +L: linux-rdma@vger.kernel.org +L: target-devel@vger.kernel.org +S: Supported +W: http://www.linux-iscsi.org +F: drivers/infiniband/ulp/isert + ISDN SUBSYSTEM M: Karsten Keil L: isdn4linux@listserv.isdn4linux.de (subscribers-only) From 8060b8dd4526bd4897e7a4207016a30a8fd99293 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Fri, 9 Jan 2015 15:13:08 -0800 Subject: [PATCH 7/7] iscsi-target: Fix typos in enum cmd_flags_table Everything else starts with ICF so the last two should as well. Fix places they are used to match. Signed-off-by: Andy Grover Signed-off-by: Nicholas Bellinger --- drivers/target/iscsi/iscsi_target.c | 12 ++++++------ drivers/target/iscsi/iscsi_target_core.h | 4 ++-- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 55f6774f706f..aebde3289c50 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -2027,10 +2027,10 @@ iscsit_process_text_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, goto reject; } if (!strncmp("=All", text_ptr, 4)) { - cmd->cmd_flags |= IFC_SENDTARGETS_ALL; + cmd->cmd_flags |= ICF_SENDTARGETS_ALL; } else if (!strncmp("=iqn.", text_ptr, 5) || !strncmp("=eui.", text_ptr, 5)) { - cmd->cmd_flags |= IFC_SENDTARGETS_SINGLE; + cmd->cmd_flags |= ICF_SENDTARGETS_SINGLE; } else { pr_err("Unable to locate valid SendTargets=%s value\n", text_ptr); goto reject; @@ -3415,10 +3415,10 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd, return -ENOMEM; } /* - * Locate pointer to iqn./eui. string for IFC_SENDTARGETS_SINGLE + * Locate pointer to iqn./eui. string for ICF_SENDTARGETS_SINGLE * explicit case.. */ - if (cmd->cmd_flags & IFC_SENDTARGETS_SINGLE) { + if (cmd->cmd_flags & ICF_SENDTARGETS_SINGLE) { text_ptr = strchr(text_in, '='); if (!text_ptr) { pr_err("Unable to locate '=' string in text_in:" @@ -3434,7 +3434,7 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd, spin_lock(&tiqn_lock); list_for_each_entry(tiqn, &g_tiqn_list, tiqn_list) { - if ((cmd->cmd_flags & IFC_SENDTARGETS_SINGLE) && + if ((cmd->cmd_flags & ICF_SENDTARGETS_SINGLE) && strcmp(tiqn->tiqn, text_ptr)) { continue; } @@ -3512,7 +3512,7 @@ eob: if (end_of_buf) break; - if (cmd->cmd_flags & IFC_SENDTARGETS_SINGLE) + if (cmd->cmd_flags & ICF_SENDTARGETS_SINGLE) break; } spin_unlock(&tiqn_lock); diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h index 09a522bae222..cbcff38ac9b7 100644 --- a/drivers/target/iscsi/iscsi_target_core.h +++ b/drivers/target/iscsi/iscsi_target_core.h @@ -135,8 +135,8 @@ enum cmd_flags_table { ICF_CONTIG_MEMORY = 0x00000020, ICF_ATTACHED_TO_RQUEUE = 0x00000040, ICF_OOO_CMDSN = 0x00000080, - IFC_SENDTARGETS_ALL = 0x00000100, - IFC_SENDTARGETS_SINGLE = 0x00000200, + ICF_SENDTARGETS_ALL = 0x00000100, + ICF_SENDTARGETS_SINGLE = 0x00000200, }; /* struct iscsi_cmd->i_state */