From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/target/loopback/tcm_loop.c | 265 ++++++------------------------ 1 file changed, 49 insertions(+), 216 deletions(-) (limited to 'kernel/drivers/target/loopback/tcm_loop.c') diff --git a/kernel/drivers/target/loopback/tcm_loop.c b/kernel/drivers/target/loopback/tcm_loop.c index 51f0c895c..4fb0eca86 100644 --- a/kernel/drivers/target/loopback/tcm_loop.c +++ b/kernel/drivers/target/loopback/tcm_loop.c @@ -34,15 +34,11 @@ #include #include -#include -#include #include "tcm_loop.h" #define to_tcm_loop_hba(hba) container_of(hba, struct tcm_loop_hba, dev) -static const struct target_core_fabric_ops loop_ops; - static struct workqueue_struct *tcm_loop_workqueue; static struct kmem_cache *tcm_loop_cmd_cache; @@ -165,6 +161,7 @@ static void tcm_loop_submission_work(struct work_struct *work) transfer_length = scsi_bufflen(sc); } + se_cmd->tag = tl_cmd->sc_cmd_tag; rc = target_submit_cmd_map_sgls(se_cmd, tl_nexus->se_sess, sc->cmnd, &tl_cmd->tl_sense_buf[0], tl_cmd->sc->device->lun, transfer_length, TCM_SIMPLE_TAG, @@ -217,7 +214,7 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc) * to struct scsi_device */ static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg, - int lun, int task, enum tcm_tmreq_table tmr) + u64 lun, int task, enum tcm_tmreq_table tmr) { struct se_cmd *se_cmd = NULL; struct se_session *se_sess; @@ -379,7 +376,6 @@ static struct scsi_host_template tcm_loop_driver_template = { .use_clustering = DISABLE_CLUSTERING, .slave_alloc = tcm_loop_slave_alloc, .module = THIS_MODULE, - .use_blk_tags = 1, .track_queue_depth = 1, }; @@ -409,7 +405,7 @@ static int tcm_loop_driver_probe(struct device *dev) sh->max_id = 2; sh->max_lun = 0; sh->max_channel = 0; - sh->max_cmd_len = TL_SCSI_MAX_CMD_LEN; + sh->max_cmd_len = SCSI_MAX_VARLEN_CDB_SIZE; host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION | SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION | @@ -520,147 +516,26 @@ static char *tcm_loop_get_fabric_name(void) return "loopback"; } -static u8 tcm_loop_get_fabric_proto_ident(struct se_portal_group *se_tpg) +static inline struct tcm_loop_tpg *tl_tpg(struct se_portal_group *se_tpg) { - struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr; - struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba; - /* - * tl_proto_id is set at tcm_loop_configfs.c:tcm_loop_make_scsi_hba() - * time based on the protocol dependent prefix of the passed configfs group. - * - * Based upon tl_proto_id, TCM_Loop emulates the requested fabric - * ProtocolID using target_core_fabric_lib.c symbols. - */ - switch (tl_hba->tl_proto_id) { - case SCSI_PROTOCOL_SAS: - return sas_get_fabric_proto_ident(se_tpg); - case SCSI_PROTOCOL_FCP: - return fc_get_fabric_proto_ident(se_tpg); - case SCSI_PROTOCOL_ISCSI: - return iscsi_get_fabric_proto_ident(se_tpg); - default: - pr_err("Unknown tl_proto_id: 0x%02x, using" - " SAS emulation\n", tl_hba->tl_proto_id); - break; - } - - return sas_get_fabric_proto_ident(se_tpg); + return container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg); } static char *tcm_loop_get_endpoint_wwn(struct se_portal_group *se_tpg) { - struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr; /* - * Return the passed NAA identifier for the SAS Target Port + * Return the passed NAA identifier for the Target Port */ - return &tl_tpg->tl_hba->tl_wwn_address[0]; + return &tl_tpg(se_tpg)->tl_hba->tl_wwn_address[0]; } static u16 tcm_loop_get_tag(struct se_portal_group *se_tpg) { - struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr; /* * This Tag is used when forming SCSI Name identifier in EVPD=1 0x83 * to represent the SCSI Target Port. */ - return tl_tpg->tl_tpgt; -} - -static u32 tcm_loop_get_default_depth(struct se_portal_group *se_tpg) -{ - return 1; -} - -static u32 tcm_loop_get_pr_transport_id( - struct se_portal_group *se_tpg, - struct se_node_acl *se_nacl, - struct t10_pr_registration *pr_reg, - int *format_code, - unsigned char *buf) -{ - struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr; - struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba; - - switch (tl_hba->tl_proto_id) { - case SCSI_PROTOCOL_SAS: - return sas_get_pr_transport_id(se_tpg, se_nacl, pr_reg, - format_code, buf); - case SCSI_PROTOCOL_FCP: - return fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg, - format_code, buf); - case SCSI_PROTOCOL_ISCSI: - return iscsi_get_pr_transport_id(se_tpg, se_nacl, pr_reg, - format_code, buf); - default: - pr_err("Unknown tl_proto_id: 0x%02x, using" - " SAS emulation\n", tl_hba->tl_proto_id); - break; - } - - return sas_get_pr_transport_id(se_tpg, se_nacl, pr_reg, - format_code, buf); -} - -static u32 tcm_loop_get_pr_transport_id_len( - struct se_portal_group *se_tpg, - struct se_node_acl *se_nacl, - struct t10_pr_registration *pr_reg, - int *format_code) -{ - struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr; - struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba; - - switch (tl_hba->tl_proto_id) { - case SCSI_PROTOCOL_SAS: - return sas_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, - format_code); - case SCSI_PROTOCOL_FCP: - return fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, - format_code); - case SCSI_PROTOCOL_ISCSI: - return iscsi_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, - format_code); - default: - pr_err("Unknown tl_proto_id: 0x%02x, using" - " SAS emulation\n", tl_hba->tl_proto_id); - break; - } - - return sas_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, - format_code); -} - -/* - * Used for handling SCSI fabric dependent TransportIDs in SPC-3 and above - * Persistent Reservation SPEC_I_PT=1 and PROUT REGISTER_AND_MOVE operations. - */ -static char *tcm_loop_parse_pr_out_transport_id( - struct se_portal_group *se_tpg, - const char *buf, - u32 *out_tid_len, - char **port_nexus_ptr) -{ - struct tcm_loop_tpg *tl_tpg = se_tpg->se_tpg_fabric_ptr; - struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba; - - switch (tl_hba->tl_proto_id) { - case SCSI_PROTOCOL_SAS: - return sas_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, - port_nexus_ptr); - case SCSI_PROTOCOL_FCP: - return fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, - port_nexus_ptr); - case SCSI_PROTOCOL_ISCSI: - return iscsi_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, - port_nexus_ptr); - default: - pr_err("Unknown tl_proto_id: 0x%02x, using" - " SAS emulation\n", tl_hba->tl_proto_id); - break; - } - - return sas_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, - port_nexus_ptr); + return tl_tpg(se_tpg)->tl_tpgt; } /* @@ -703,30 +578,6 @@ static int tcm_loop_check_prot_fabric_only(struct se_portal_group *se_tpg) return tl_tpg->tl_fabric_prot_type; } -static struct se_node_acl *tcm_loop_tpg_alloc_fabric_acl( - struct se_portal_group *se_tpg) -{ - struct tcm_loop_nacl *tl_nacl; - - tl_nacl = kzalloc(sizeof(struct tcm_loop_nacl), GFP_KERNEL); - if (!tl_nacl) { - pr_err("Unable to allocate struct tcm_loop_nacl\n"); - return NULL; - } - - return &tl_nacl->se_node_acl; -} - -static void tcm_loop_tpg_release_fabric_acl( - struct se_portal_group *se_tpg, - struct se_node_acl *se_nacl) -{ - struct tcm_loop_nacl *tl_nacl = container_of(se_nacl, - struct tcm_loop_nacl, se_node_acl); - - kfree(tl_nacl); -} - static u32 tcm_loop_get_inst_index(struct se_portal_group *se_tpg) { return 1; @@ -742,14 +593,6 @@ static void tcm_loop_set_default_node_attributes(struct se_node_acl *se_acl) return; } -static u32 tcm_loop_get_task_tag(struct se_cmd *se_cmd) -{ - struct tcm_loop_cmd *tl_cmd = container_of(se_cmd, - struct tcm_loop_cmd, tl_se_cmd); - - return tl_cmd->sc_cmd_tag; -} - static int tcm_loop_get_cmd_state(struct se_cmd *se_cmd) { struct tcm_loop_cmd *tl_cmd = container_of(se_cmd, @@ -902,7 +745,7 @@ static void tcm_loop_port_unlink( se_lun->unpacked_lun); if (!sd) { pr_err("Unable to locate struct scsi_device for %d:%d:" - "%d\n", 0, tl_tpg->tl_tpgt, se_lun->unpacked_lun); + "%llu\n", 0, tl_tpg->tl_tpgt, se_lun->unpacked_lun); return; } /* @@ -918,21 +761,20 @@ static void tcm_loop_port_unlink( /* End items for tcm_loop_port_cit */ -static ssize_t tcm_loop_tpg_attrib_show_fabric_prot_type( - struct se_portal_group *se_tpg, - char *page) +static ssize_t tcm_loop_tpg_attrib_fabric_prot_type_show( + struct config_item *item, char *page) { + struct se_portal_group *se_tpg = attrib_to_tpg(item); struct tcm_loop_tpg *tl_tpg = container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg); return sprintf(page, "%d\n", tl_tpg->tl_fabric_prot_type); } -static ssize_t tcm_loop_tpg_attrib_store_fabric_prot_type( - struct se_portal_group *se_tpg, - const char *page, - size_t count) +static ssize_t tcm_loop_tpg_attrib_fabric_prot_type_store( + struct config_item *item, const char *page, size_t count) { + struct se_portal_group *se_tpg = attrib_to_tpg(item); struct tcm_loop_tpg *tl_tpg = container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg); unsigned long val; @@ -951,10 +793,10 @@ static ssize_t tcm_loop_tpg_attrib_store_fabric_prot_type( return count; } -TF_TPG_ATTRIB_ATTR(tcm_loop, fabric_prot_type, S_IRUGO | S_IWUSR); +CONFIGFS_ATTR(tcm_loop_tpg_attrib_, fabric_prot_type); static struct configfs_attribute *tcm_loop_tpg_attrib_attrs[] = { - &tcm_loop_tpg_attrib_fabric_prot_type.attr, + &tcm_loop_tpg_attrib_attr_fabric_prot_type, NULL, }; @@ -1000,7 +842,7 @@ static int tcm_loop_make_nexus( transport_free_session(tl_nexus->se_sess); goto out; } - /* Now, register the SAS I_T Nexus as active. */ + /* Now, register the I_T Nexus as active. */ transport_register_session(se_tpg, tl_nexus->se_sess->se_node_acl, tl_nexus->se_sess, tl_nexus); tl_tpg->tl_nexus = tl_nexus; @@ -1039,7 +881,7 @@ static int tcm_loop_drop_nexus( " %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tpg->tl_hba), tl_nexus->se_sess->se_node_acl->initiatorname); /* - * Release the SCSI I_T Nexus to the emulated SAS Target Port + * Release the SCSI I_T Nexus to the emulated Target Port */ transport_deregister_session(tl_nexus->se_sess); tpg->tl_nexus = NULL; @@ -1049,10 +891,9 @@ static int tcm_loop_drop_nexus( /* End items for tcm_loop_nexus_cit */ -static ssize_t tcm_loop_tpg_show_nexus( - struct se_portal_group *se_tpg, - char *page) +static ssize_t tcm_loop_tpg_nexus_show(struct config_item *item, char *page) { + struct se_portal_group *se_tpg = to_tpg(item); struct tcm_loop_tpg *tl_tpg = container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg); struct tcm_loop_nexus *tl_nexus; @@ -1068,11 +909,10 @@ static ssize_t tcm_loop_tpg_show_nexus( return ret; } -static ssize_t tcm_loop_tpg_store_nexus( - struct se_portal_group *se_tpg, - const char *page, - size_t count) +static ssize_t tcm_loop_tpg_nexus_store(struct config_item *item, + const char *page, size_t count) { + struct se_portal_group *se_tpg = to_tpg(item); struct tcm_loop_tpg *tl_tpg = container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg); struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba; @@ -1147,12 +987,10 @@ check_newline: return count; } -TF_TPG_BASE_ATTR(tcm_loop, nexus, S_IRUGO | S_IWUSR); - -static ssize_t tcm_loop_tpg_show_transport_status( - struct se_portal_group *se_tpg, - char *page) +static ssize_t tcm_loop_tpg_transport_status_show(struct config_item *item, + char *page) { + struct se_portal_group *se_tpg = to_tpg(item); struct tcm_loop_tpg *tl_tpg = container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg); const char *status = NULL; @@ -1175,11 +1013,10 @@ static ssize_t tcm_loop_tpg_show_transport_status( return ret; } -static ssize_t tcm_loop_tpg_store_transport_status( - struct se_portal_group *se_tpg, - const char *page, - size_t count) +static ssize_t tcm_loop_tpg_transport_status_store(struct config_item *item, + const char *page, size_t count) { + struct se_portal_group *se_tpg = to_tpg(item); struct tcm_loop_tpg *tl_tpg = container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg); @@ -1189,16 +1026,22 @@ static ssize_t tcm_loop_tpg_store_transport_status( } if (!strncmp(page, "offline", 7)) { tl_tpg->tl_transport_status = TCM_TRANSPORT_OFFLINE; + if (tl_tpg->tl_nexus) { + struct se_session *tl_sess = tl_tpg->tl_nexus->se_sess; + + core_allocate_nexus_loss_ua(tl_sess->se_node_acl); + } return count; } return -EINVAL; } -TF_TPG_BASE_ATTR(tcm_loop, transport_status, S_IRUGO | S_IWUSR); +CONFIGFS_ATTR(tcm_loop_tpg_, nexus); +CONFIGFS_ATTR(tcm_loop_tpg_, transport_status); static struct configfs_attribute *tcm_loop_tpg_attrs[] = { - &tcm_loop_tpg_nexus.attr, - &tcm_loop_tpg_transport_status.attr, + &tcm_loop_tpg_attr_nexus, + &tcm_loop_tpg_attr_transport_status, NULL, }; @@ -1232,10 +1075,9 @@ static struct se_portal_group *tcm_loop_make_naa_tpg( tl_tpg->tl_hba = tl_hba; tl_tpg->tl_tpgt = tpgt; /* - * Register the tl_tpg as a emulated SAS TCM Target Endpoint + * Register the tl_tpg as a emulated TCM Target Endpoint */ - ret = core_tpg_register(&loop_ops, wwn, &tl_tpg->tl_se_tpg, tl_tpg, - TRANSPORT_TPG_TYPE_NORMAL); + ret = core_tpg_register(wwn, &tl_tpg->tl_se_tpg, tl_hba->tl_proto_id); if (ret < 0) return ERR_PTR(-ENOMEM); @@ -1258,11 +1100,11 @@ static void tcm_loop_drop_naa_tpg( tl_hba = tl_tpg->tl_hba; tpgt = tl_tpg->tl_tpgt; /* - * Release the I_T Nexus for the Virtual SAS link if present + * Release the I_T Nexus for the Virtual target link if present */ tcm_loop_drop_nexus(tl_tpg); /* - * Deregister the tl_tpg as a emulated SAS TCM Target Endpoint + * Deregister the tl_tpg as a emulated TCM Target Endpoint */ core_tpg_deregister(se_tpg); @@ -1355,8 +1197,9 @@ static void tcm_loop_drop_scsi_hba( struct tcm_loop_hba, tl_hba_wwn); pr_debug("TCM_Loop_ConfigFS: Deallocating emulated Target" - " SAS Address: %s at Linux/SCSI Host ID: %d\n", - tl_hba->tl_wwn_address, tl_hba->sh->host_no); + " %s Address: %s at Linux/SCSI Host ID: %d\n", + tcm_loop_dump_proto_id(tl_hba), tl_hba->tl_wwn_address, + tl_hba->sh->host_no); /* * Call device_unregister() on the original tl_hba->dev. * tcm_loop_fabric_scsi.c:tcm_loop_release_adapter() will @@ -1366,17 +1209,15 @@ static void tcm_loop_drop_scsi_hba( } /* Start items for tcm_loop_cit */ -static ssize_t tcm_loop_wwn_show_attr_version( - struct target_fabric_configfs *tf, - char *page) +static ssize_t tcm_loop_wwn_version_show(struct config_item *item, char *page) { return sprintf(page, "TCM Loopback Fabric module %s\n", TCM_LOOP_VERSION); } -TF_WWN_ATTR_RO(tcm_loop, version); +CONFIGFS_ATTR_RO(tcm_loop_wwn_, version); static struct configfs_attribute *tcm_loop_wwn_attrs[] = { - &tcm_loop_wwn_version.attr, + &tcm_loop_wwn_attr_version, NULL, }; @@ -1386,13 +1227,8 @@ static const struct target_core_fabric_ops loop_ops = { .module = THIS_MODULE, .name = "loopback", .get_fabric_name = tcm_loop_get_fabric_name, - .get_fabric_proto_ident = tcm_loop_get_fabric_proto_ident, .tpg_get_wwn = tcm_loop_get_endpoint_wwn, .tpg_get_tag = tcm_loop_get_tag, - .tpg_get_default_depth = tcm_loop_get_default_depth, - .tpg_get_pr_transport_id = tcm_loop_get_pr_transport_id, - .tpg_get_pr_transport_id_len = tcm_loop_get_pr_transport_id_len, - .tpg_parse_pr_out_transport_id = tcm_loop_parse_pr_out_transport_id, .tpg_check_demo_mode = tcm_loop_check_demo_mode, .tpg_check_demo_mode_cache = tcm_loop_check_demo_mode_cache, .tpg_check_demo_mode_write_protect = @@ -1400,8 +1236,6 @@ static const struct target_core_fabric_ops loop_ops = { .tpg_check_prod_mode_write_protect = tcm_loop_check_prod_mode_write_protect, .tpg_check_prot_fabric_only = tcm_loop_check_prot_fabric_only, - .tpg_alloc_fabric_acl = tcm_loop_tpg_alloc_fabric_acl, - .tpg_release_fabric_acl = tcm_loop_tpg_release_fabric_acl, .tpg_get_inst_index = tcm_loop_get_inst_index, .check_stop_free = tcm_loop_check_stop_free, .release_cmd = tcm_loop_release_cmd, @@ -1411,7 +1245,6 @@ static const struct target_core_fabric_ops loop_ops = { .write_pending = tcm_loop_write_pending, .write_pending_status = tcm_loop_write_pending_status, .set_default_node_attributes = tcm_loop_set_default_node_attributes, - .get_task_tag = tcm_loop_get_task_tag, .get_cmd_state = tcm_loop_get_cmd_state, .queue_data_in = tcm_loop_queue_data_in, .queue_status = tcm_loop_queue_status, -- cgit 1.2.3-korg