From efa4988d72c69d3024ee25ad1ae87c83b9f8267e Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 19 Jul 2011 08:09:01 +0000 Subject: target: Remove unnecessary *cdb transport_get_lun_for_cmd parameter This patch removes the now unnecessary 'unsigned char *cdb' function parameter from transport_get_lun_for_cmd(). This also includes updating lio-target, tcm_loop and tcm_fc usage of transport_get_lun_for_cmd(). Reported-by: Fubo Chen Signed-off-by: Nicholas A. Bellinger --- drivers/target/loopback/tcm_loop.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 70c2e7fa6664..2d0f22a91f67 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -122,7 +122,7 @@ static struct se_cmd *tcm_loop_allocate_core_cmd( /* * Locate the struct se_lun pointer and attach it to struct se_cmd */ - if (transport_get_lun_for_cmd(se_cmd, NULL, tl_cmd->sc->device->lun) < 0) { + if (transport_get_lun_for_cmd(se_cmd, tl_cmd->sc->device->lun) < 0) { kmem_cache_free(tcm_loop_cmd_cache, tl_cmd); set_host_byte(sc, DID_NO_CONNECT); return NULL; -- cgit v1.2.3 From e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Tue, 19 Jul 2011 08:55:10 +0000 Subject: target: Core cleanups from AGrover (round 1) This patch contains the squashed version of a number of cleanups and minor fixes from Andy's initial series (round 1) for target core this past spring. The condensed log looks like: target: use errno values instead of returning -1 for everything target: Rename transport_calc_sg_num to transport_init_task_sg target: Fix leak in error path in transport_init_task_sg target/pscsi: Remove pscsi_get_sh() usage target: Make two runtime checks into WARN_ONs target: Remove hba queue depth and convert to spin_lock_irq usage target: dev->dev_status_queue_obj is unused target: Make struct se_queue_req.cmd type struct se_cmd * target: Remove __transport_get_qr_from_queue() target: Rename se_dev->g_se_dev_list to se_dev_node target: Remove struct se_global target: Simplify scsi mib index table code target: Make dev_queue_obj a member of se_device instead of a pointer target: remove extraneous returns at end of void functions target: Ensure transport_dump_vpd_ident_type returns null-terminated str target: Function pointers don't need to use '&' to be assigned target: Fix comment in __transport_execute_tasks() target: Misc style cleanups target: rename struct pr_reservation_template to pr_reservation target: Remove #defines that just perform indirection target: Inline transport_get_task_from_execute_queue() target: Minor header comment fixes Signed-off-by: Andy Grover Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 2d0f22a91f67..2f19e1926493 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -118,7 +118,7 @@ static struct se_cmd *tcm_loop_allocate_core_cmd( * Signal BIDI usage with T_TASK(cmd)->t_tasks_bidi */ if (scsi_bidi_cmnd(sc)) - T_TASK(se_cmd)->t_tasks_bidi = 1; + se_cmd->t_task->t_tasks_bidi = 1; /* * Locate the struct se_lun pointer and attach it to struct se_cmd */ @@ -176,7 +176,7 @@ static int tcm_loop_new_cmd_map(struct se_cmd *se_cmd) * For BIDI commands, pass in the extra READ buffer * to transport_generic_map_mem_to_cmd() below.. */ - if (T_TASK(se_cmd)->t_tasks_bidi) { + if (se_cmd->t_task->t_tasks_bidi) { struct scsi_data_buffer *sdb = scsi_in(sc); mem_bidi_ptr = (void *)sdb->table.sgl; @@ -1402,9 +1402,9 @@ static int tcm_loop_register_configfs(void) * Register the top level struct config_item_type with TCM core */ fabric = target_fabric_configfs_init(THIS_MODULE, "loopback"); - if (!fabric) { + if (IS_ERR(fabric)) { printk(KERN_ERR "tcm_loop_register_configfs() failed!\n"); - return -1; + return PTR_ERR(fabric); } /* * Setup the fabric API of function pointers used by target_core_mod -- cgit v1.2.3 From 5951146dea1ac8ff2f177477c907084d63913cad Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Tue, 19 Jul 2011 10:26:37 +0000 Subject: target: More core cleanups from AGrover (round 2) This patch contains the squashed version of second round of target core cleanups and simplifications and Andy and Co. It also contains a handful of fixes to address bugs the original series and other minor cleanups. Here is the condensed shortlog: target: Remove unneeded casts to void* target: Rename get_lun_for_{cmd,tmr} to lookup_{cmd,tmr}_lun target: Make t_task a member of se_cmd, not a pointer target: Handle functions returning "-2" target: Use cmd->se_dev over cmd->se_lun->lun_se_dev target: Embed qr in struct se_cmd target: Replace embedded struct se_queue_req with a list_head target: Rename list_heads that are nodes in struct se_cmd to "*_node" target: Fold transport_device_setup_cmd() into lookup_{tmr,cmd}_lun() target: Make t_mem_list and t_mem_list_bidi members of t_task target: Add comment & cleanup transport_map_sg_to_mem() target: Remove unneeded checks in transport_free_pages() (Roland: Fix se_queue_req removal leftovers OOPs) (nab: Fix transport_lookup_tmr_lun failure case) (nab: Fix list_empty(&cmd->t_task.t_mem_bidi_list) inversion bugs) Signed-off-by: Andy Grover Signed-off-by: Roland Dreier Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 56 +++++++++++++++----------------------- 1 file changed, 22 insertions(+), 34 deletions(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 2f19e1926493..eeb7ee7ab9f7 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -118,17 +118,16 @@ static struct se_cmd *tcm_loop_allocate_core_cmd( * Signal BIDI usage with T_TASK(cmd)->t_tasks_bidi */ if (scsi_bidi_cmnd(sc)) - se_cmd->t_task->t_tasks_bidi = 1; + se_cmd->t_task.t_tasks_bidi = 1; /* * Locate the struct se_lun pointer and attach it to struct se_cmd */ - if (transport_get_lun_for_cmd(se_cmd, tl_cmd->sc->device->lun) < 0) { + if (transport_lookup_cmd_lun(se_cmd, tl_cmd->sc->device->lun) < 0) { kmem_cache_free(tcm_loop_cmd_cache, tl_cmd); set_host_byte(sc, DID_NO_CONNECT); return NULL; } - transport_device_setup_cmd(se_cmd); return se_cmd; } @@ -143,17 +142,17 @@ static int tcm_loop_new_cmd_map(struct se_cmd *se_cmd) struct tcm_loop_cmd *tl_cmd = container_of(se_cmd, struct tcm_loop_cmd, tl_se_cmd); struct scsi_cmnd *sc = tl_cmd->sc; - void *mem_ptr, *mem_bidi_ptr = NULL; - u32 sg_no_bidi = 0; + struct scatterlist *sgl_bidi = NULL; + u32 sgl_bidi_count = 0; int ret; /* * Allocate the necessary tasks to complete the received CDB+data */ - ret = transport_generic_allocate_tasks(se_cmd, tl_cmd->sc->cmnd); - if (ret == -1) { + ret = transport_generic_allocate_tasks(se_cmd, sc->cmnd); + if (ret == -ENOMEM) { /* Out of Resources */ return PYX_TRANSPORT_LU_COMM_FAILURE; - } else if (ret == -2) { + } else if (ret == -EINVAL) { /* * Handle case for SAM_STAT_RESERVATION_CONFLICT */ @@ -165,35 +164,24 @@ static int tcm_loop_new_cmd_map(struct se_cmd *se_cmd) */ return PYX_TRANSPORT_USE_SENSE_REASON; } + /* - * Setup the struct scatterlist memory from the received - * struct scsi_cmnd. + * For BIDI commands, pass in the extra READ buffer + * to transport_generic_map_mem_to_cmd() below.. */ - if (scsi_sg_count(sc)) { - se_cmd->se_cmd_flags |= SCF_PASSTHROUGH_SG_TO_MEM; - mem_ptr = (void *)scsi_sglist(sc); - /* - * For BIDI commands, pass in the extra READ buffer - * to transport_generic_map_mem_to_cmd() below.. - */ - if (se_cmd->t_task->t_tasks_bidi) { - struct scsi_data_buffer *sdb = scsi_in(sc); + if (se_cmd->t_task.t_tasks_bidi) { + struct scsi_data_buffer *sdb = scsi_in(sc); - mem_bidi_ptr = (void *)sdb->table.sgl; - sg_no_bidi = sdb->table.nents; - } - } else { - /* - * Used for DMA_NONE - */ - mem_ptr = NULL; + sgl_bidi = sdb->table.sgl; + sgl_bidi_count = sdb->table.nents; } + /* * Map the SG memory into struct se_mem->page linked list using the same * physical memory at sg->page_link. */ - ret = transport_generic_map_mem_to_cmd(se_cmd, mem_ptr, - scsi_sg_count(sc), mem_bidi_ptr, sg_no_bidi); + ret = transport_generic_map_mem_to_cmd(se_cmd, scsi_sglist(sc), + scsi_sg_count(sc), sgl_bidi, sgl_bidi_count); if (ret < 0) return PYX_TRANSPORT_LU_COMM_FAILURE; @@ -384,14 +372,14 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc) /* * Allocate the LUN_RESET TMR */ - se_cmd->se_tmr_req = core_tmr_alloc_req(se_cmd, (void *)tl_tmr, + se_cmd->se_tmr_req = core_tmr_alloc_req(se_cmd, tl_tmr, TMR_LUN_RESET); if (IS_ERR(se_cmd->se_tmr_req)) goto release; /* * Locate the underlying TCM struct se_lun from sc->device->lun */ - if (transport_get_lun_for_tmr(se_cmd, sc->device->lun) < 0) + if (transport_lookup_tmr_lun(se_cmd, sc->device->lun) < 0) goto release; /* * Queue the TMR to TCM Core and sleep waiting for tcm_loop_queue_tm_rsp() @@ -904,7 +892,7 @@ static int tcm_loop_queue_status(struct se_cmd *se_cmd) ((se_cmd->se_cmd_flags & SCF_TRANSPORT_TASK_SENSE) || (se_cmd->se_cmd_flags & SCF_EMULATED_TASK_SENSE))) { - memcpy((void *)sc->sense_buffer, (void *)se_cmd->sense_buffer, + memcpy(sc->sense_buffer, se_cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); sc->result = SAM_STAT_CHECK_CONDITION; set_driver_byte(sc, DRIVER_SENSE); @@ -1054,7 +1042,7 @@ static int tcm_loop_make_nexus( * transport_register_session() */ __transport_register_session(se_tpg, tl_nexus->se_sess->se_node_acl, - tl_nexus->se_sess, (void *)tl_nexus); + tl_nexus->se_sess, tl_nexus); tl_tpg->tl_hba->tl_nexus = tl_nexus; printk(KERN_INFO "TCM_Loop_ConfigFS: Established I_T Nexus to emulated" " %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba), @@ -1242,7 +1230,7 @@ struct se_portal_group *tcm_loop_make_naa_tpg( * Register the tl_tpg as a emulated SAS TCM Target Endpoint */ ret = core_tpg_register(&tcm_loop_fabric_configfs->tf_ops, - wwn, &tl_tpg->tl_se_tpg, (void *)tl_tpg, + wwn, &tl_tpg->tl_se_tpg, tl_tpg, TRANSPORT_TPG_TYPE_NORMAL); if (ret < 0) return ERR_PTR(-ENOMEM); -- cgit v1.2.3 From a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Mon, 2 May 2011 17:12:10 -0700 Subject: target: Updates from AGrover and HCH (round 3) This patch contains a squashed version of third round series cleanups, improvements ,and simplfications from Andy and Christoph ahead of the heavy lifting between round 3 -> 4 for the target core SGL conversion. This include cleanups to the main target I/O path and other miscellaneous updates. target: Replace custom sg<->buf functions with lib funcs target: Simplify sector limiting code target: get_cdb should never return NULL target: Simplify transport_memcpy_se_mem_read_contig target: Use assignment rather than increment for t_task_cdbs target: Don't pass dma_size to generic_get_mem target: Pass sg with type scatterlist in transport_map_sg_to_mem target: Move task_sg_num next to task_sg in struct se_task target: inline struct se_transport_task into struct se_cmd target: Change name & semantics of transport_get_sectors() target: Remove unused members of se_cmd target: Rename se_cmd.t_task_cdbs to t_task_list_num target: Fix some spelling target: Remove unused var from transport_generic_do_tmr target: map_sg_to_mem: return sg_count in return value target/pscsi: Use min_t for sector limits target/pscsi: Unused param for pscsi_get_bio() target: Rename get_cdb_count to allocate_tasks target: Make transport_generic_new_cmd() available for iscsi-target target: Remove fabric callback to allocate iovecs target: Fix transport_generic_new_cmd WRITE comment (hch: Use __GFP_ZERO usage for alloc_pages() usage) Signed-off-by: Andy Grover Reviewed-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index eeb7ee7ab9f7..7ba2542aabe7 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -118,7 +118,7 @@ static struct se_cmd *tcm_loop_allocate_core_cmd( * Signal BIDI usage with T_TASK(cmd)->t_tasks_bidi */ if (scsi_bidi_cmnd(sc)) - se_cmd->t_task.t_tasks_bidi = 1; + se_cmd->t_tasks_bidi = 1; /* * Locate the struct se_lun pointer and attach it to struct se_cmd */ @@ -169,7 +169,7 @@ static int tcm_loop_new_cmd_map(struct se_cmd *se_cmd) * For BIDI commands, pass in the extra READ buffer * to transport_generic_map_mem_to_cmd() below.. */ - if (se_cmd->t_task.t_tasks_bidi) { + if (se_cmd->t_tasks_bidi) { struct scsi_data_buffer *sdb = scsi_in(sc); sgl_bidi = sdb->table.sgl; @@ -1423,13 +1423,6 @@ static int tcm_loop_register_configfs(void) fabric->tf_ops.tpg_release_fabric_acl = &tcm_loop_tpg_release_fabric_acl; fabric->tf_ops.tpg_get_inst_index = &tcm_loop_get_inst_index; - /* - * Since tcm_loop is mapping physical memory from Linux/SCSI - * struct scatterlist arrays for each struct scsi_cmnd I/O, - * we do not need TCM to allocate a iovec array for - * virtual memory address mappings - */ - fabric->tf_ops.alloc_cmd_iovecs = NULL; /* * Used for setting up remaining TCM resources in process context */ -- cgit v1.2.3 From dc2e652d5f36d7b1c8764c3c3174e28ec2d9903b Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 31 May 2011 17:06:42 -0400 Subject: target: remove the always-noop ->new_cmd_failure method Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 11 ----------- 1 file changed, 11 deletions(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 7ba2542aabe7..cb4a9b906a4b 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -772,16 +772,6 @@ static u32 tcm_loop_get_inst_index(struct se_portal_group *se_tpg) return 1; } -static void tcm_loop_new_cmd_failure(struct se_cmd *se_cmd) -{ - /* - * Since TCM_loop is already passing struct scatterlist data from - * struct scsi_cmnd, no more Linux/SCSI failure dependent state need - * to be handled here. - */ - return; -} - static int tcm_loop_is_state_remove(struct se_cmd *se_cmd) { /* @@ -1446,7 +1436,6 @@ static int tcm_loop_register_configfs(void) &tcm_loop_set_default_node_attributes; fabric->tf_ops.get_task_tag = &tcm_loop_get_task_tag; fabric->tf_ops.get_cmd_state = &tcm_loop_get_cmd_state; - fabric->tf_ops.new_cmd_failure = &tcm_loop_new_cmd_failure; fabric->tf_ops.queue_data_in = &tcm_loop_queue_data_in; fabric->tf_ops.queue_status = &tcm_loop_queue_status; fabric->tf_ops.queue_tm_rsp = &tcm_loop_queue_tm_rsp; -- cgit v1.2.3 From 35462975b2b197b990fedbb74b81f9bea9d344cb Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 31 May 2011 23:56:57 -0400 Subject: target: merge release_cmd methods The release_cmd_to_pool and release_cmd_direct methods are always the same. Merge them into a single release_cmd method, and clean up the fallout. (nab: fix breakage in transport_generic_free_cmd() parameter build breakage in drivers/target/tcm_fc/tfc_cmd.c) Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index cb4a9b906a4b..c2937b2035d3 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -204,13 +204,10 @@ static void tcm_loop_check_stop_free(struct se_cmd *se_cmd) * Release the struct se_cmd, which will make a callback to release * struct tcm_loop_cmd * in tcm_loop_deallocate_core_cmd() */ - transport_generic_free_cmd(se_cmd, 0, 1, 0); + transport_generic_free_cmd(se_cmd, 0, 0); } -/* - * Called from struct target_core_fabric_ops->release_cmd_to_pool() - */ -static void tcm_loop_deallocate_core_cmd(struct se_cmd *se_cmd) +static void tcm_loop_release_cmd(struct se_cmd *se_cmd) { struct tcm_loop_cmd *tl_cmd = container_of(se_cmd, struct tcm_loop_cmd, tl_se_cmd); @@ -395,7 +392,7 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc) SUCCESS : FAILED; release: if (se_cmd) - transport_generic_free_cmd(se_cmd, 1, 1, 0); + transport_generic_free_cmd(se_cmd, 1, 0); else kmem_cache_free(tcm_loop_cmd_cache, tl_cmd); kfree(tl_tmr); @@ -1418,8 +1415,7 @@ static int tcm_loop_register_configfs(void) */ fabric->tf_ops.new_cmd_map = &tcm_loop_new_cmd_map; fabric->tf_ops.check_stop_free = &tcm_loop_check_stop_free; - fabric->tf_ops.release_cmd_to_pool = &tcm_loop_deallocate_core_cmd; - fabric->tf_ops.release_cmd_direct = &tcm_loop_deallocate_core_cmd; + fabric->tf_ops.release_cmd = &tcm_loop_release_cmd; fabric->tf_ops.shutdown_session = &tcm_loop_shutdown_session; fabric->tf_ops.close_session = &tcm_loop_close_session; fabric->tf_ops.stop_session = &tcm_loop_stop_session; -- cgit v1.2.3 From 12f09ccb4612734a53e47ed5302e0479c10a50f8 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sat, 2 Apr 2011 14:32:47 -0700 Subject: loopback: off by one in tcm_loop_make_naa_tpg() This is an off by one 'tgpt' check in tcm_loop_make_naa_tpg() that could result in memory corruption. Signed-off-by: Dan Carpenter Signed-off-by: Nicholas A. Bellinger --- drivers/target/loopback/tcm_loop.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index c2937b2035d3..083d6c51f052 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -1205,7 +1205,7 @@ struct se_portal_group *tcm_loop_make_naa_tpg( tpgt_str += 5; /* Skip ahead of "tpgt_" */ tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0); - if (tpgt > TL_TPGS_PER_HBA) { + if (tpgt >= TL_TPGS_PER_HBA) { printk(KERN_ERR "Passed tpgt: %hu exceeds TL_TPGS_PER_HBA:" " %u\n", tpgt, TL_TPGS_PER_HBA); return ERR_PTR(-EINVAL); -- cgit v1.2.3 From 824cc5ff37a0dc3ec8c9e7002e3b1ca0b408917e Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Wed, 22 Jun 2011 01:55:50 -0700 Subject: loopback: Remove duplicate scsi/scsi_tcq.h include Signed-off-by: Jesper Juhl Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 083d6c51f052..e53cec64ddd4 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -31,7 +31,6 @@ #include #include #include -#include #include #include -- cgit v1.2.3 From a57b5d36453cc9335f75ae191ffd682a250d08ba Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Tue, 28 Jun 2011 00:30:17 +0200 Subject: loopback: Fix memory leak in tcm_loop_make_scsi_hba() There is a memory leak in tcm_loop_make_scsi_hba(). If all the strstr() calls return NULL and we end up at return ERR_PTR(-EINVAL); then we'll be leaking the memory previously allocated to tl_hba as that variable goes out of scope. This patch should fix the leak. Signed-off-by: Jesper Juhl Signed-off-by: Dan Carpenter Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index e53cec64ddd4..fe11a336b598 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -1288,22 +1288,21 @@ struct se_wwn *tcm_loop_make_scsi_hba( goto check_len; } ptr = strstr(name, "iqn."); - if (ptr) { - tl_hba->tl_proto_id = SCSI_PROTOCOL_ISCSI; - goto check_len; + if (!ptr) { + printk(KERN_ERR "Unable to locate prefix for emulated Target " + "Port: %s\n", name); + ret = -EINVAL; + goto out; } - - printk(KERN_ERR "Unable to locate prefix for emulated Target Port:" - " %s\n", name); - return ERR_PTR(-EINVAL); + tl_hba->tl_proto_id = SCSI_PROTOCOL_ISCSI; check_len: if (strlen(name) >= TL_WWN_ADDR_LEN) { printk(KERN_ERR "Emulated NAA %s Address: %s, exceeds" " max: %d\n", name, tcm_loop_dump_proto_id(tl_hba), TL_WWN_ADDR_LEN); - kfree(tl_hba); - return ERR_PTR(-EINVAL); + ret = -EINVAL; + goto out; } snprintf(&tl_hba->tl_wwn_address[0], TL_WWN_ADDR_LEN, "%s", &name[off]); -- cgit v1.2.3 From ec98f7825c6eaa4a9afb0eb518826efc8a2ed4a2 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Wed, 20 Jul 2011 19:28:46 +0000 Subject: target: Eliminate usage of struct se_mem Both backstores and fabrics use arrays of struct scatterlist to describe data buffers. However TCM used struct se_mems, basically a linked list of scatterlist entries. We are able to simplify the code by eliminating this intermediate data structure and just using struct scatterlist[] throughout. Also, moved attachment of task to cmd out of transport_generic_get_task and into allocate_control_task and allocate_data_tasks. The reasoning is that it's nonintuitive that get_task should automatically add it to the cmd's task list -- it should just return an allocated, initialized task. That's all it should do, based on the function's name, so either the function shouldn't do it, or the name should change to encapsulate the entire essence of what it does. (nab: Fix compile warnings in tcm_fc, and make transport_kmap_first_data_page honor sg->offset for SGLs from contigious memory with TCM_Loop, and fix control se_cmd descriptor memory leak) Signed-off-by: Andy Grover Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index fe11a336b598..99603bc45786 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -175,10 +175,7 @@ static int tcm_loop_new_cmd_map(struct se_cmd *se_cmd) sgl_bidi_count = sdb->table.nents; } - /* - * Map the SG memory into struct se_mem->page linked list using the same - * physical memory at sg->page_link. - */ + /* Tell the core about our preallocated memory */ ret = transport_generic_map_mem_to_cmd(se_cmd, scsi_sglist(sc), scsi_sg_count(sc), sgl_bidi, sgl_bidi_count); if (ret < 0) -- cgit v1.2.3 From 6708bb27bb2703da238f21f516034263348af5be Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Wed, 8 Jun 2011 10:36:43 -0700 Subject: target: Follow up core updates from AGrover and HCH (round 4) This patch contains the squashed version of forth round series cleanups from Andy and Christoph following the post heavy lifting in the preceeding: 'Eliminate usage of struct se_mem' and 'Make all control CDBs scatter-gather' changes. This also includes a conversion of target core and the v3.0 mainline fabric modules (loopback and tcm_fc) to use pr_debug and the CONFIG_DYNAMIC_DEBUG infrastructure! These have been squashed into this third and final round for v3.1. target: Remove ifdeffed code in t_g_process_write target: Remove direct ramdisk code target: Rename task_sg_num to task_sg_nents target: Remove custom debug macros for pr_debug. Use pr_err(). target: Remove custom debug macros in mainline fabrics target: Set WSNZ=1 in block limits VPD. Abort if WRITE_SAME sectors = 0 target: Remove transport do_se_mem_map callback target: Further simplify transport_free_pages target: Redo task allocation return value handling target: Remove extra parentheses target: change alloc_task call to take *cdb, not *cmd (nab: Fix bogus struct file assignments in fd_do_readv and fd_do_writev) Signed-off-by: Andy Grover Reviewed-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 94 +++++++++++++++++++------------------- 1 file changed, 47 insertions(+), 47 deletions(-) (limited to 'drivers/target/loopback/tcm_loop.c') diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 99603bc45786..aa2d67997235 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -79,7 +79,7 @@ static struct se_cmd *tcm_loop_allocate_core_cmd( tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_ATOMIC); if (!tl_cmd) { - printk(KERN_ERR "Unable to allocate struct tcm_loop_cmd\n"); + pr_err("Unable to allocate struct tcm_loop_cmd\n"); set_host_byte(sc, DID_ERROR); return NULL; } @@ -281,7 +281,7 @@ static int tcm_loop_queuecommand( struct tcm_loop_hba *tl_hba; struct tcm_loop_tpg *tl_tpg; - TL_CDB_DEBUG("tcm_loop_queuecommand() %d:%d:%d:%d got CDB: 0x%02x" + pr_debug("tcm_loop_queuecommand() %d:%d:%d:%d got CDB: 0x%02x" " scsi_buf_len: %u\n", sc->device->host->host_no, sc->device->id, sc->device->channel, sc->device->lun, sc->cmnd[0], scsi_bufflen(sc)); @@ -331,7 +331,7 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc) */ tl_nexus = tl_hba->tl_nexus; if (!tl_nexus) { - printk(KERN_ERR "Unable to perform device reset without" + pr_err("Unable to perform device reset without" " active I_T Nexus\n"); return FAILED; } @@ -344,13 +344,13 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc) tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_KERNEL); if (!tl_cmd) { - printk(KERN_ERR "Unable to allocate memory for tl_cmd\n"); + pr_err("Unable to allocate memory for tl_cmd\n"); return FAILED; } tl_tmr = kzalloc(sizeof(struct tcm_loop_tmr), GFP_KERNEL); if (!tl_tmr) { - printk(KERN_ERR "Unable to allocate memory for tl_tmr\n"); + pr_err("Unable to allocate memory for tl_tmr\n"); goto release; } init_waitqueue_head(&tl_tmr->tl_tmr_wait); @@ -435,7 +435,7 @@ static int tcm_loop_driver_probe(struct device *dev) sh = scsi_host_alloc(&tcm_loop_driver_template, sizeof(struct tcm_loop_hba)); if (!sh) { - printk(KERN_ERR "Unable to allocate struct scsi_host\n"); + pr_err("Unable to allocate struct scsi_host\n"); return -ENODEV; } tl_hba->sh = sh; @@ -454,7 +454,7 @@ static int tcm_loop_driver_probe(struct device *dev) error = scsi_add_host(sh, &tl_hba->dev); if (error) { - printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); + pr_err("%s: scsi_add_host failed\n", __func__); scsi_host_put(sh); return -ENODEV; } @@ -495,7 +495,7 @@ static int tcm_loop_setup_hba_bus(struct tcm_loop_hba *tl_hba, int tcm_loop_host ret = device_register(&tl_hba->dev); if (ret) { - printk(KERN_ERR "device_register() failed for" + pr_err("device_register() failed for" " tl_hba->dev: %d\n", ret); return -ENODEV; } @@ -513,24 +513,24 @@ static int tcm_loop_alloc_core_bus(void) tcm_loop_primary = root_device_register("tcm_loop_0"); if (IS_ERR(tcm_loop_primary)) { - printk(KERN_ERR "Unable to allocate tcm_loop_primary\n"); + pr_err("Unable to allocate tcm_loop_primary\n"); return PTR_ERR(tcm_loop_primary); } ret = bus_register(&tcm_loop_lld_bus); if (ret) { - printk(KERN_ERR "bus_register() failed for tcm_loop_lld_bus\n"); + pr_err("bus_register() failed for tcm_loop_lld_bus\n"); goto dev_unreg; } ret = driver_register(&tcm_loop_driverfs); if (ret) { - printk(KERN_ERR "driver_register() failed for" + pr_err("driver_register() failed for" "tcm_loop_driverfs\n"); goto bus_unreg; } - printk(KERN_INFO "Initialized TCM Loop Core Bus\n"); + pr_debug("Initialized TCM Loop Core Bus\n"); return ret; bus_unreg: @@ -546,7 +546,7 @@ static void tcm_loop_release_core_bus(void) bus_unregister(&tcm_loop_lld_bus); root_device_unregister(tcm_loop_primary); - printk(KERN_INFO "Releasing TCM Loop Core BUS\n"); + pr_debug("Releasing TCM Loop Core BUS\n"); } static char *tcm_loop_get_fabric_name(void) @@ -574,7 +574,7 @@ static u8 tcm_loop_get_fabric_proto_ident(struct se_portal_group *se_tpg) case SCSI_PROTOCOL_ISCSI: return iscsi_get_fabric_proto_ident(se_tpg); default: - printk(KERN_ERR "Unknown tl_proto_id: 0x%02x, using" + pr_err("Unknown tl_proto_id: 0x%02x, using" " SAS emulation\n", tl_hba->tl_proto_id); break; } @@ -630,7 +630,7 @@ static u32 tcm_loop_get_pr_transport_id( return iscsi_get_pr_transport_id(se_tpg, se_nacl, pr_reg, format_code, buf); default: - printk(KERN_ERR "Unknown tl_proto_id: 0x%02x, using" + pr_err("Unknown tl_proto_id: 0x%02x, using" " SAS emulation\n", tl_hba->tl_proto_id); break; } @@ -660,7 +660,7 @@ static u32 tcm_loop_get_pr_transport_id_len( return iscsi_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, format_code); default: - printk(KERN_ERR "Unknown tl_proto_id: 0x%02x, using" + pr_err("Unknown tl_proto_id: 0x%02x, using" " SAS emulation\n", tl_hba->tl_proto_id); break; } @@ -694,7 +694,7 @@ static char *tcm_loop_parse_pr_out_transport_id( return iscsi_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, port_nexus_ptr); default: - printk(KERN_ERR "Unknown tl_proto_id: 0x%02x, using" + pr_err("Unknown tl_proto_id: 0x%02x, using" " SAS emulation\n", tl_hba->tl_proto_id); break; } @@ -743,7 +743,7 @@ static struct se_node_acl *tcm_loop_tpg_alloc_fabric_acl( tl_nacl = kzalloc(sizeof(struct tcm_loop_nacl), GFP_KERNEL); if (!tl_nacl) { - printk(KERN_ERR "Unable to allocate struct tcm_loop_nacl\n"); + pr_err("Unable to allocate struct tcm_loop_nacl\n"); return NULL; } @@ -853,7 +853,7 @@ static int tcm_loop_queue_data_in(struct se_cmd *se_cmd) struct tcm_loop_cmd, tl_se_cmd); struct scsi_cmnd *sc = tl_cmd->sc; - TL_CDB_DEBUG("tcm_loop_queue_data_in() called for scsi_cmnd: %p" + pr_debug("tcm_loop_queue_data_in() called for scsi_cmnd: %p" " cdb: 0x%02x\n", sc, sc->cmnd[0]); sc->result = SAM_STAT_GOOD; @@ -868,7 +868,7 @@ static int tcm_loop_queue_status(struct se_cmd *se_cmd) struct tcm_loop_cmd, tl_se_cmd); struct scsi_cmnd *sc = tl_cmd->sc; - TL_CDB_DEBUG("tcm_loop_queue_status() called for scsi_cmnd: %p" + pr_debug("tcm_loop_queue_status() called for scsi_cmnd: %p" " cdb: 0x%02x\n", sc, sc->cmnd[0]); if (se_cmd->sense_buffer && @@ -943,7 +943,7 @@ static int tcm_loop_port_link( */ scsi_add_device(tl_hba->sh, 0, tl_tpg->tl_tpgt, lun->unpacked_lun); - printk(KERN_INFO "TCM_Loop_ConfigFS: Port Link Successful\n"); + pr_debug("TCM_Loop_ConfigFS: Port Link Successful\n"); return 0; } @@ -961,7 +961,7 @@ static void tcm_loop_port_unlink( sd = scsi_device_lookup(tl_hba->sh, 0, tl_tpg->tl_tpgt, se_lun->unpacked_lun); if (!sd) { - printk(KERN_ERR "Unable to locate struct scsi_device for %d:%d:" + pr_err("Unable to locate struct scsi_device for %d:%d:" "%d\n", 0, tl_tpg->tl_tpgt, se_lun->unpacked_lun); return; } @@ -974,7 +974,7 @@ static void tcm_loop_port_unlink( atomic_dec(&tl_tpg->tl_tpg_port_count); smp_mb__after_atomic_dec(); - printk(KERN_INFO "TCM_Loop_ConfigFS: Port Unlink Successful\n"); + pr_debug("TCM_Loop_ConfigFS: Port Unlink Successful\n"); } /* End items for tcm_loop_port_cit */ @@ -991,14 +991,14 @@ static int tcm_loop_make_nexus( int ret = -ENOMEM; if (tl_tpg->tl_hba->tl_nexus) { - printk(KERN_INFO "tl_tpg->tl_hba->tl_nexus already exists\n"); + pr_debug("tl_tpg->tl_hba->tl_nexus already exists\n"); return -EEXIST; } se_tpg = &tl_tpg->tl_se_tpg; tl_nexus = kzalloc(sizeof(struct tcm_loop_nexus), GFP_KERNEL); if (!tl_nexus) { - printk(KERN_ERR "Unable to allocate struct tcm_loop_nexus\n"); + pr_err("Unable to allocate struct tcm_loop_nexus\n"); return -ENOMEM; } /* @@ -1027,7 +1027,7 @@ static int tcm_loop_make_nexus( __transport_register_session(se_tpg, tl_nexus->se_sess->se_node_acl, tl_nexus->se_sess, tl_nexus); tl_tpg->tl_hba->tl_nexus = tl_nexus; - printk(KERN_INFO "TCM_Loop_ConfigFS: Established I_T Nexus to emulated" + pr_debug("TCM_Loop_ConfigFS: Established I_T Nexus to emulated" " %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba), name); return 0; @@ -1053,13 +1053,13 @@ static int tcm_loop_drop_nexus( return -ENODEV; if (atomic_read(&tpg->tl_tpg_port_count)) { - printk(KERN_ERR "Unable to remove TCM_Loop I_T Nexus with" + pr_err("Unable to remove TCM_Loop I_T Nexus with" " active TPG port count: %d\n", atomic_read(&tpg->tl_tpg_port_count)); return -EPERM; } - printk(KERN_INFO "TCM_Loop_ConfigFS: Removing I_T Nexus to emulated" + pr_debug("TCM_Loop_ConfigFS: Removing I_T Nexus to emulated" " %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba), tl_nexus->se_sess->se_node_acl->initiatorname); /* @@ -1115,7 +1115,7 @@ static ssize_t tcm_loop_tpg_store_nexus( * tcm_loop_make_nexus() */ if (strlen(page) >= TL_WWN_ADDR_LEN) { - printk(KERN_ERR "Emulated NAA Sas Address: %s, exceeds" + pr_err("Emulated NAA Sas Address: %s, exceeds" " max: %d\n", page, TL_WWN_ADDR_LEN); return -EINVAL; } @@ -1124,7 +1124,7 @@ static ssize_t tcm_loop_tpg_store_nexus( ptr = strstr(i_port, "naa."); if (ptr) { if (tl_hba->tl_proto_id != SCSI_PROTOCOL_SAS) { - printk(KERN_ERR "Passed SAS Initiator Port %s does not" + pr_err("Passed SAS Initiator Port %s does not" " match target port protoid: %s\n", i_port, tcm_loop_dump_proto_id(tl_hba)); return -EINVAL; @@ -1135,7 +1135,7 @@ static ssize_t tcm_loop_tpg_store_nexus( ptr = strstr(i_port, "fc."); if (ptr) { if (tl_hba->tl_proto_id != SCSI_PROTOCOL_FCP) { - printk(KERN_ERR "Passed FCP Initiator Port %s does not" + pr_err("Passed FCP Initiator Port %s does not" " match target port protoid: %s\n", i_port, tcm_loop_dump_proto_id(tl_hba)); return -EINVAL; @@ -1146,7 +1146,7 @@ static ssize_t tcm_loop_tpg_store_nexus( ptr = strstr(i_port, "iqn."); if (ptr) { if (tl_hba->tl_proto_id != SCSI_PROTOCOL_ISCSI) { - printk(KERN_ERR "Passed iSCSI Initiator Port %s does not" + pr_err("Passed iSCSI Initiator Port %s does not" " match target port protoid: %s\n", i_port, tcm_loop_dump_proto_id(tl_hba)); return -EINVAL; @@ -1154,7 +1154,7 @@ static ssize_t tcm_loop_tpg_store_nexus( port_ptr = &i_port[0]; goto check_newline; } - printk(KERN_ERR "Unable to locate prefix for emulated Initiator Port:" + pr_err("Unable to locate prefix for emulated Initiator Port:" " %s\n", i_port); return -EINVAL; /* @@ -1194,7 +1194,7 @@ struct se_portal_group *tcm_loop_make_naa_tpg( tpgt_str = strstr(name, "tpgt_"); if (!tpgt_str) { - printk(KERN_ERR "Unable to locate \"tpgt_#\" directory" + pr_err("Unable to locate \"tpgt_#\" directory" " group\n"); return ERR_PTR(-EINVAL); } @@ -1202,7 +1202,7 @@ struct se_portal_group *tcm_loop_make_naa_tpg( tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0); if (tpgt >= TL_TPGS_PER_HBA) { - printk(KERN_ERR "Passed tpgt: %hu exceeds TL_TPGS_PER_HBA:" + pr_err("Passed tpgt: %hu exceeds TL_TPGS_PER_HBA:" " %u\n", tpgt, TL_TPGS_PER_HBA); return ERR_PTR(-EINVAL); } @@ -1218,7 +1218,7 @@ struct se_portal_group *tcm_loop_make_naa_tpg( if (ret < 0) return ERR_PTR(-ENOMEM); - printk(KERN_INFO "TCM_Loop_ConfigFS: Allocated Emulated %s" + pr_debug("TCM_Loop_ConfigFS: Allocated Emulated %s" " Target Port %s,t,0x%04x\n", tcm_loop_dump_proto_id(tl_hba), config_item_name(&wwn->wwn_group.cg_item), tpgt); @@ -1245,7 +1245,7 @@ void tcm_loop_drop_naa_tpg( */ core_tpg_deregister(se_tpg); - printk(KERN_INFO "TCM_Loop_ConfigFS: Deallocated Emulated %s" + pr_debug("TCM_Loop_ConfigFS: Deallocated Emulated %s" " Target Port %s,t,0x%04x\n", tcm_loop_dump_proto_id(tl_hba), config_item_name(&wwn->wwn_group.cg_item), tpgt); } @@ -1266,7 +1266,7 @@ struct se_wwn *tcm_loop_make_scsi_hba( tl_hba = kzalloc(sizeof(struct tcm_loop_hba), GFP_KERNEL); if (!tl_hba) { - printk(KERN_ERR "Unable to allocate struct tcm_loop_hba\n"); + pr_err("Unable to allocate struct tcm_loop_hba\n"); return ERR_PTR(-ENOMEM); } /* @@ -1286,7 +1286,7 @@ struct se_wwn *tcm_loop_make_scsi_hba( } ptr = strstr(name, "iqn."); if (!ptr) { - printk(KERN_ERR "Unable to locate prefix for emulated Target " + pr_err("Unable to locate prefix for emulated Target " "Port: %s\n", name); ret = -EINVAL; goto out; @@ -1295,7 +1295,7 @@ struct se_wwn *tcm_loop_make_scsi_hba( check_len: if (strlen(name) >= TL_WWN_ADDR_LEN) { - printk(KERN_ERR "Emulated NAA %s Address: %s, exceeds" + pr_err("Emulated NAA %s Address: %s, exceeds" " max: %d\n", name, tcm_loop_dump_proto_id(tl_hba), TL_WWN_ADDR_LEN); ret = -EINVAL; @@ -1314,7 +1314,7 @@ check_len: sh = tl_hba->sh; tcm_loop_hba_no_cnt++; - printk(KERN_INFO "TCM_Loop_ConfigFS: Allocated emulated Target" + pr_debug("TCM_Loop_ConfigFS: Allocated emulated Target" " %s Address: %s at Linux/SCSI Host ID: %d\n", tcm_loop_dump_proto_id(tl_hba), name, sh->host_no); @@ -1337,7 +1337,7 @@ void tcm_loop_drop_scsi_hba( */ device_unregister(&tl_hba->dev); - printk(KERN_INFO "TCM_Loop_ConfigFS: Deallocated emulated Target" + pr_debug("TCM_Loop_ConfigFS: Deallocated emulated Target" " SAS Address: %s at Linux/SCSI Host ID: %d\n", config_item_name(&wwn->wwn_group.cg_item), host_no); } @@ -1373,7 +1373,7 @@ static int tcm_loop_register_configfs(void) */ fabric = target_fabric_configfs_init(THIS_MODULE, "loopback"); if (IS_ERR(fabric)) { - printk(KERN_ERR "tcm_loop_register_configfs() failed!\n"); + pr_err("tcm_loop_register_configfs() failed!\n"); return PTR_ERR(fabric); } /* @@ -1464,7 +1464,7 @@ static int tcm_loop_register_configfs(void) */ ret = target_fabric_configfs_register(fabric); if (ret < 0) { - printk(KERN_ERR "target_fabric_configfs_register() for" + pr_err("target_fabric_configfs_register() for" " TCM_Loop failed!\n"); target_fabric_configfs_free(fabric); return -1; @@ -1473,7 +1473,7 @@ static int tcm_loop_register_configfs(void) * Setup our local pointer to *fabric. */ tcm_loop_fabric_configfs = fabric; - printk(KERN_INFO "TCM_LOOP[0] - Set fabric ->" + pr_debug("TCM_LOOP[0] - Set fabric ->" " tcm_loop_fabric_configfs\n"); return 0; } @@ -1485,7 +1485,7 @@ static void tcm_loop_deregister_configfs(void) target_fabric_configfs_deregister(tcm_loop_fabric_configfs); tcm_loop_fabric_configfs = NULL; - printk(KERN_INFO "TCM_LOOP[0] - Cleared" + pr_debug("TCM_LOOP[0] - Cleared" " tcm_loop_fabric_configfs\n"); } @@ -1498,7 +1498,7 @@ static int __init tcm_loop_fabric_init(void) __alignof__(struct tcm_loop_cmd), 0, NULL); if (!tcm_loop_cmd_cache) { - printk(KERN_ERR "kmem_cache_create() for" + pr_debug("kmem_cache_create() for" " tcm_loop_cmd_cache failed\n"); return -ENOMEM; } -- cgit v1.2.3