diff options
| -rw-r--r-- | drivers/scsi/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/scsi/Makefile | 3 | ||||
| -rw-r--r-- | drivers/scsi/scsi_tgt_if.c | 399 | ||||
| -rw-r--r-- | drivers/scsi/scsi_tgt_lib.c | 661 | ||||
| -rw-r--r-- | drivers/scsi/scsi_tgt_priv.h | 32 | ||||
| -rw-r--r-- | drivers/scsi/scsi_transport_fc.c | 12 | ||||
| -rw-r--r-- | drivers/scsi/scsi_transport_fc_internal.h | 26 | ||||
| -rw-r--r-- | drivers/scsi/scsi_transport_srp.c | 18 | ||||
| -rw-r--r-- | drivers/scsi/scsi_transport_srp_internal.h | 25 | ||||
| -rw-r--r-- | include/scsi/scsi_host.h | 21 | ||||
| -rw-r--r-- | include/scsi/scsi_tgt.h | 21 | ||||
| -rw-r--r-- | include/scsi/scsi_tgt_if.h | 108 |
12 files changed, 0 insertions, 1333 deletions
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 67d1ac34245..2f85035e6e9 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -304,13 +304,6 @@ config SCSI_SRP_ATTRS If you wish to export transport-specific information about each attached SRP device to sysfs, say Y. -config SCSI_SRP_TGT_ATTRS - bool "SCSI target support for SRP Transport Attributes" - depends on SCSI_SRP_ATTRS - depends on SCSI_TGT = y || SCSI_TGT = SCSI_SRP_ATTRS - help - If you want to use SCSI target mode drivers enable this option. - endmenu menuconfig SCSI_LOWLEVEL diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index e069e95a2f9..5f0d299b009 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile @@ -20,7 +20,6 @@ CFLAGS_gdth.o = # -DDEBUG_GDTH=2 -D__SERIAL__ -D__COM2__ -DGDTH_STATISTICS obj-$(CONFIG_PCMCIA) += pcmcia/ obj-$(CONFIG_SCSI) += scsi_mod.o -obj-$(CONFIG_SCSI_TGT) += scsi_tgt.o obj-$(CONFIG_RAID_ATTRS) += raid_class.o @@ -171,8 +170,6 @@ scsi_mod-$(CONFIG_PM) += scsi_pm.o hv_storvsc-y := storvsc_drv.o -scsi_tgt-y += scsi_tgt_lib.o scsi_tgt_if.o - sd_mod-objs := sd.o sd_mod-$(CONFIG_BLK_DEV_INTEGRITY) += sd_dif.o diff --git a/drivers/scsi/scsi_tgt_if.c b/drivers/scsi/scsi_tgt_if.c deleted file mode 100644 index 6209110f295..00000000000 --- a/drivers/scsi/scsi_tgt_if.c +++ /dev/null @@ -1,399 +0,0 @@ -/* - * SCSI target kernel/user interface functions - * - * Copyright (C) 2005 FUJITA Tomonori <tomof@acm.org> - * Copyright (C) 2005 Mike Christie <michaelc@cs.wisc.edu> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ -#include <linux/miscdevice.h> -#include <linux/gfp.h> -#include <linux/file.h> -#include <linux/export.h> -#include <net/tcp.h> -#include <scsi/scsi.h> -#include <scsi/scsi_cmnd.h> -#include <scsi/scsi_device.h> -#include <scsi/scsi_host.h> -#include <scsi/scsi_tgt.h> -#include <scsi/scsi_tgt_if.h> - -#include <asm/cacheflush.h> - -#include "scsi_tgt_priv.h" - -#if TGT_RING_SIZE < PAGE_SIZE -# define TGT_RING_SIZE PAGE_SIZE -#endif - -#define TGT_RING_PAGES (TGT_RING_SIZE >> PAGE_SHIFT) -#define TGT_EVENT_PER_PAGE (PAGE_SIZE / sizeof(struct tgt_event)) -#define TGT_MAX_EVENTS (TGT_EVENT_PER_PAGE * TGT_RING_PAGES) - -struct tgt_ring { - u32 tr_idx; - unsigned long tr_pages[TGT_RING_PAGES]; - spinlock_t tr_lock; -}; - -/* tx_ring : kernel->user, rx_ring : user->kernel */ -static struct tgt_ring tx_ring, rx_ring; -static DECLARE_WAIT_QUEUE_HEAD(tgt_poll_wait); - -static inline void tgt_ring_idx_inc(struct tgt_ring *ring) -{ - if (ring->tr_idx == TGT_MAX_EVENTS - 1) - ring->tr_idx = 0; - else - ring->tr_idx++; -} - -static struct tgt_event *tgt_head_event(struct tgt_ring *ring, u32 idx) -{ - u32 pidx, off; - - pidx = idx / TGT_EVENT_PER_PAGE; - off = idx % TGT_EVENT_PER_PAGE; - - return (struct tgt_event *) - (ring->tr_pages[pidx] + sizeof(struct tgt_event) * off); -} - -static int tgt_uspace_send_event(u32 type, struct tgt_event *p) -{ - struct tgt_event *ev; - struct tgt_ring *ring = &tx_ring; - unsigned long flags; - int err = 0; - - spin_lock_irqsave(&ring->tr_lock, flags); - - ev = tgt_head_event(ring, ring->tr_idx); - if (!ev->hdr.status) - tgt_ring_idx_inc(ring); - else - err = -BUSY; - - spin_unlock_irqrestore(&ring->tr_lock, flags); - - if (err) - return err; - - memcpy(ev, p, sizeof(*ev)); - ev->hdr.type = type; - mb(); - ev->hdr.status = 1; - - flush_dcache_page(virt_to_page(ev)); - - wake_up_interruptible(&tgt_poll_wait); - - return 0; -} - -int scsi_tgt_uspace_send_cmd(struct scsi_cmnd *cmd, u64 itn_id, - struct scsi_lun *lun, u64 tag) -{ - struct Scsi_Host *shost = scsi_tgt_cmd_to_host(cmd); - struct tgt_event ev; - int err; - - memset(&ev, 0, sizeof(ev)); - ev.p.cmd_req.host_no = shost->host_no; - ev.p.cmd_req.itn_id = itn_id; - ev.p.cmd_req.data_len = scsi_bufflen(cmd); - memcpy(ev.p.cmd_req.scb, cmd->cmnd, sizeof(ev.p.cmd_req.scb)); - memcpy(ev.p.cmd_req.lun, lun, sizeof(ev.p.cmd_req.lun)); - ev.p.cmd_req.attribute = cmd->tag; - ev.p.cmd_req.tag = tag; - - dprintk("%p %d %u %x %llx\n", cmd, shost->host_no, - ev.p.cmd_req.data_len, cmd->tag, - (unsigned long long) ev.p.cmd_req.tag); - - err = tgt_uspace_send_event(TGT_KEVENT_CMD_REQ, &ev); - if (err) - eprintk("tx buf is full, could not send\n"); - - return err; -} - -int scsi_tgt_uspace_send_status(struct scsi_cmnd *cmd, u64 itn_id, u64 tag) -{ - struct Scsi_Host *shost = scsi_tgt_cmd_to_host(cmd); - struct tgt_event ev; - int err; - - memset(&ev, 0, sizeof(ev)); - ev.p.cmd_done.host_no = shost->host_no; - ev.p.cmd_done.itn_id = itn_id; - ev.p.cmd_done.tag = tag; - ev.p.cmd_done.result = cmd->result; - - dprintk("%p %d %llu %u %x\n", cmd, shost->host_no, - (unsigned long long) ev.p.cmd_req.tag, - ev.p.cmd_req.data_len, cmd->tag); - - err = tgt_uspace_send_event(TGT_KEVENT_CMD_DONE, &ev); - if (err) - eprintk("tx buf is full, could not send\n"); - - return err; -} - -int scsi_tgt_uspace_send_tsk_mgmt(int host_no, u64 itn_id, int function, - u64 tag, struct scsi_lun *scsilun, void *data) -{ - struct tgt_event ev; - int err; - - memset(&ev, 0, sizeof(ev)); - ev.p.tsk_mgmt_req.host_no = host_no; - ev.p.tsk_mgmt_req.itn_id = itn_id; - ev.p.tsk_mgmt_req.function = function; - ev.p.tsk_mgmt_req.tag = tag; - memcpy(ev.p.tsk_mgmt_req.lun, scsilun, sizeof(ev.p.tsk_mgmt_req.lun)); - ev.p.tsk_mgmt_req.mid = (u64) (unsigned long) data; - - dprintk("%d %x %llx %llx\n", host_no, function, (unsigned long long) tag, - (unsigned long long) ev.p.tsk_mgmt_req.mid); - - err = tgt_uspace_send_event(TGT_KEVENT_TSK_MGMT_REQ, &ev); - if (err) - eprintk("tx buf is full, could not send\n"); - - return err; -} - -int scsi_tgt_uspace_send_it_nexus_request(int host_no, u64 itn_id, - int function, char *initiator_id) -{ - struct tgt_event ev; - int err; - - memset(&ev, 0, sizeof(ev)); - ev.p.it_nexus_req.host_no = host_no; - ev.p.it_nexus_req.function = function; - ev.p.it_nexus_req.itn_id = itn_id; - if (initiator_id) - strncpy(ev.p.it_nexus_req.initiator_id, initiator_id, - sizeof(ev.p.it_nexus_req.initiator_id)); - - dprintk("%d %x %llx\n", host_no, function, (unsigned long long)itn_id); - - err = tgt_uspace_send_event(TGT_KEVENT_IT_NEXUS_REQ, &ev); - if (err) - eprintk("tx buf is full, could not send\n"); - - return err; -} - -static int event_recv_msg(struct tgt_event *ev) -{ - int err = 0; - - switch (ev->hdr.type) { - case TGT_UEVENT_CMD_RSP: - err = scsi_tgt_kspace_exec(ev->p.cmd_rsp.host_no, - ev->p.cmd_rsp.itn_id, - ev->p.cmd_rsp.result, - ev->p.cmd_rsp.tag, - ev->p.cmd_rsp.uaddr, - ev->p.cmd_rsp.len, - ev->p.cmd_rsp.sense_uaddr, - ev->p.cmd_rsp.sense_len, - ev->p.cmd_rsp.rw); - break; - case TGT_UEVENT_TSK_MGMT_RSP: - err = scsi_tgt_kspace_tsk_mgmt(ev->p.tsk_mgmt_rsp.host_no, - ev->p.tsk_mgmt_rsp.itn_id, - ev->p.tsk_mgmt_rsp.mid, - ev->p.tsk_mgmt_rsp.result); - break; - case TGT_UEVENT_IT_NEXUS_RSP: - err = scsi_tgt_kspace_it_nexus_rsp(ev->p.it_nexus_rsp.host_no, - ev->p.it_nexus_rsp.itn_id, - ev->p.it_nexus_rsp.result); - break; - default: - eprintk("unknown type %d\n", ev->hdr.type); - err = -EINVAL; - } - - return err; -} - -static ssize_t tgt_write(struct file *file, const char __user * buffer, - size_t count, loff_t * ppos) -{ - struct tgt_event *ev; - struct tgt_ring *ring = &rx_ring; - - while (1) { - ev = tgt_head_event(ring, ring->tr_idx); - /* do we need this? */ - flush_dcache_page(virt_to_page(ev)); - - if (!ev->hdr.status) - break; - - tgt_ring_idx_inc(ring); - event_recv_msg(ev); - ev->hdr.status = 0; - }; - - return count; -} - -static unsigned int tgt_poll(struct file * file, struct poll_table_struct *wait) -{ - struct tgt_event *ev; - struct tgt_ring *ring = &tx_ring; - unsigned long flags; - unsigned int mask = 0; - u32 idx; - - poll_wait(file, &tgt_poll_wait, wait); - - spin_lock_irqsave(&ring->tr_lock, flags); - - idx = ring->tr_idx ? ring->tr_idx - 1 : TGT_MAX_EVENTS - 1; - ev = tgt_head_event(ring, idx); - if (ev->hdr.status) - mask |= POLLIN | POLLRDNORM; - - spin_unlock_irqrestore(&ring->tr_lock, flags); - - return mask; -} - -static int uspace_ring_map(struct vm_area_struct *vma, unsigned long addr, - struct tgt_ring *ring) -{ - int i, err; - - for (i = 0; i < TGT_RING_PAGES; i++) { - struct page *page = virt_to_page(ring->tr_pages[i]); - err = vm_insert_page(vma, addr, page); - if (err) - return err; - addr += PAGE_SIZE; - } - - return 0; -} - -static int tgt_mmap(struct file *filp, struct vm_area_struct *vma) -{ - unsigned long addr; - int err; - - if (vma->vm_pgoff) - return -EINVAL; - - if (vma->vm_end - vma->vm_start != TGT_RING_SIZE * 2) { - eprintk("mmap size must be %lu, not %lu \n", - TGT_RING_SIZE * 2, vma->vm_end - vma->vm_start); - return -EINVAL; - } - - addr = vma->vm_start; - err = uspace_ring_map(vma, addr, &tx_ring); - if (err) - return err; - err = uspace_ring_map(vma, addr + TGT_RING_SIZE, &rx_ring); - - return err; -} - -static int tgt_open(struct inode *inode, struct file *file) -{ - tx_ring.tr_idx = rx_ring.tr_idx = 0; - - return 0; -} - -static const struct file_operations tgt_fops = { - .owner = THIS_MODULE, - .open = tgt_open, - .poll = tgt_poll, - .write = tgt_write, - .mmap = tgt_mmap, - .llseek = noop_llseek, -}; - -static struct miscdevice tgt_miscdev = { - .minor = MISC_DYNAMIC_MINOR, - .name = "tgt", - .fops = &tgt_fops, -}; - -static void tgt_ring_exit(struct tgt_ring *ring) -{ - int i; - - for (i = 0; i < TGT_RING_PAGES; i++) - free_page(ring->tr_pages[i]); -} - -static int tgt_ring_init(struct tgt_ring *ring) -{ - int i; - - spin_lock_init(&ring->tr_lock); - - for (i = 0; i < TGT_RING_PAGES; i++) { - ring->tr_pages[i] = get_zeroed_page(GFP_KERNEL); - if (!ring->tr_pages[i]) { - eprintk("out of memory\n"); - return -ENOMEM; - } - } - - return 0; -} - -void scsi_tgt_if_exit(void) -{ - tgt_ring_exit(&tx_ring); - tgt_ring_exit(&rx_ring); - misc_deregister(&tgt_miscdev); -} - -int scsi_tgt_if_init(void) -{ - int err; - - err = tgt_ring_init(&tx_ring); - if (err) - return err; - - err = tgt_ring_init(&rx_ring); - if (err) - goto free_tx_ring; - - err = misc_register(&tgt_miscdev); - if (err) - goto free_rx_ring; - - return 0; -free_rx_ring: - tgt_ring_exit(&rx_ring); -free_tx_ring: - tgt_ring_exit(&tx_ring); - - return err; -} diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c deleted file mode 100644 index e51add05fb8..00000000000 --- a/drivers/scsi/scsi_tgt_lib.c +++ /dev/null @@ -1,661 +0,0 @@ -/* - * SCSI target lib functions - * - * Copyright (C) 2005 Mike Christie <michaelc@cs.wisc.edu> - * Copyright (C) 2005 FUJITA Tomonori <tomof@acm.org> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ -#include <linux/blkdev.h> -#include <linux/hash.h> -#include <linux/module.h> -#include <linux/pagemap.h> -#include <linux/slab.h> -#include <scsi/scsi.h> -#include <scsi/scsi_cmnd.h> -#include <scsi/scsi_device.h> -#include <scsi/scsi_host.h> -#include <scsi/scsi_transport.h> -#include <scsi/scsi_tgt.h> - -#include "scsi_tgt_priv.h" - -static struct workqueue_struct *scsi_tgtd; -static struct kmem_cache *scsi_tgt_cmd_cache; - -/* - * TODO: this struct will be killed when the block layer supports large bios - * and James's work struct code is in - */ -struct scsi_tgt_cmd { - /* TODO replace work with James b's code */ - struct work_struct work; - /* TODO fix limits of some drivers */ - struct bio *bio; - - struct list_head hash_list; - struct request *rq; - u64 itn_id; - u64 tag; -}; - -#define TGT_HASH_ORDER 4 -#define cmd_hashfn(tag) hash_long((unsigned long) (tag), TGT_HASH_ORDER) - -struct scsi_tgt_queuedata { - struct Scsi_Host *shost; - struct list_head cmd_hash[1 << TGT_HASH_ORDER]; - spinlock_t cmd_hash_lock; -}; - -/* - * Function: scsi_host_get_command() - * - * Purpose: Allocate and setup a scsi command block and blk request - * - * Arguments: shost - scsi host - * data_dir - dma data dir - * gfp_mask- allocator flags - * - * Returns: The allocated scsi command structure. - * - * This should be called by target LLDs to get a command. - */ -struct scsi_cmnd *scsi_host_get_command(struct Scsi_Host *shost, - enum dma_data_direction data_dir, - gfp_t gfp_mask) -{ - int write = (data_dir == DMA_TO_DEVICE); - struct request *rq; - struct scsi_cmnd *cmd; - struct scsi_tgt_cmd *tcmd; - - /* Bail if we can't get a reference to the device */ - if (!get_device(&shost->shost_gendev)) - return NULL; - - tcmd = kmem_cache_alloc(scsi_tgt_cmd_cache, GFP_ATOMIC); - if (!tcmd) - goto put_dev; - - /* - * The blk helpers are used to the READ/WRITE requests - * transferring data from a initiator point of view. Since - * we are in target mode we want the opposite. - */ - rq = blk_get_request(shost->uspace_req_q, !write, gfp_mask); - if (!rq) - goto free_tcmd; - - cmd = __scsi_get_command(shost, gfp_mask); - if (!cmd) - goto release_rq; - - cmd->sc_data_direction = data_dir; - cmd->jiffies_at_alloc = jiffies; - cmd->request = rq; - - cmd->cmnd = rq->cmd; - - rq->special = cmd; - rq->cmd_type = REQ_TYPE_SPECIAL; - rq->cmd_flags |= REQ_TYPE_BLOCK_PC; - rq->end_io_data = tcmd; - - tcmd->rq = rq; - - return cmd; - -release_rq: - blk_put_request(rq); -free_tcmd: - kmem_cache_free(scsi_tgt_cmd_cache, tcmd); -put_dev: - put_device(&shost->shost_gendev); - return NULL; - -} -EXPORT_SYMBOL_GPL(scsi_host_get_command); - -/* - * Function: scsi_host_put_command() - * - * Purpose: Free a scsi command block - * - * Arguments: shost - scsi host - * cmd - command block to free - * - * Returns: Nothing. - * - * Notes: The command must not belong to any lists. - */ -void scsi_host_put_command(struct Scsi_Host *shost, struct scsi_cmnd *cmd) -{ - struct request_queue *q = shost->uspace_req_q; - struct request *rq = cmd->request; - struct scsi_tgt_cmd *tcmd = rq->end_io_data; - unsigned long flags; - - kmem_cache_free(scsi_tgt_cmd_cache, tcmd); - - spin_lock_irqsave(q->queue_lock, flags); - __blk_put_request(q, rq); - spin_unlock_irqrestore(q->queue_lock, flags); - - __scsi_put_command(shost, cmd); - put_device(&shost->shost_gendev); -} -EXPORT_SYMBOL_GPL(scsi_host_put_command); - -static void cmd_hashlist_del(struct scsi_cmnd *cmd) -{ - struct request_queue *q = cmd->request->q; - struct scsi_tgt_queuedata *qdata = q->queuedata; - unsigned long flags; - struct scsi_tgt_cmd *tcmd = cmd->request->end_io_data; - - spin_lock_irqsave(&qdata->cmd_hash_lock, flags); - list_del(&tcmd->hash_list); - spin_unlock_irqrestore(&qdata->cmd_hash_lock, flags); -} - -static void scsi_unmap_user_pages(struct scsi_tgt_cmd *tcmd) -{ - blk_rq_unmap_user(tcmd->bio); -} - -static void scsi_tgt_cmd_destroy(struct work_struct *work) -{ - struct scsi_tgt_cmd *tcmd = - container_of(work, struct scsi_tgt_cmd, work); - struct scsi_cmnd *cmd = tcmd->rq->special; - - dprintk("cmd %p %d %u\n", cmd, cmd->sc_data_direction, - rq_data_dir(cmd->request)); - scsi_unmap_user_pages(tcmd); - tcmd->rq->bio = NULL; - scsi_host_put_command(scsi_tgt_cmd_to_host(cmd), cmd); -} - -static void init_scsi_tgt_cmd(struct request *rq, struct scsi_tgt_cmd *tcmd, - u64 itn_id, u64 tag) -{ - struct scsi_tgt_queuedata *qdata = rq->q->queuedata; - unsigned long flags; - struct list_head *head; - - tcmd->itn_id = itn_id; - tcmd->tag = tag; - tcmd->bio = NULL; - INIT_WORK(&tcmd->work, scsi_tgt_cmd_destroy); - spin_lock_irqsave(&qdata->cmd_hash_lock, flags); - head = &qdata->cmd_hash[cmd_hashfn(tag)]; - list_add(&tcmd->hash_list, head); - spin_unlock_irqrestore(&qdata->cmd_hash_lock, flags); -} - -/* - * scsi_tgt_alloc_queue - setup queue used for message passing - * shost: scsi host - * - * This should be called by the LLD after host allocation. - * And will be released when the host is released. - */ -int scsi_tgt_alloc_queue(struct Scsi_Host *shost) -{ - struct scsi_tgt_queuedata *queuedata; - struct request_queue *q; - int err, i; - - /* - * Do we need to send a netlink event or should uspace - * just respond to the hotplug event? - */ - q = __scsi_alloc_queue(shost, NULL); - if (!q) - return -ENOMEM; - - queuedata = kzalloc(sizeof(*queuedata), GFP_KERNEL); - if (!queuedata) { - err = -ENOMEM; - goto cleanup_queue; - } - queuedata->shost = shost; - q->queuedata = queuedata; - - /* - * this is a silly hack. We should probably just queue as many - * command as is recvd to userspace. uspace can then make - * sure we do not overload the HBA - */ - q->nr_requests = shost->can_queue; - /* - * We currently only support software LLDs so this does - * not matter for now. Do we need this for the cards we support? - * If so we should make it a host template value. - */ - blk_queue_dma_alignment(q, 0); - shost->uspace_req_q = q; - - for (i = 0; i < ARRAY_SIZE(queuedata->cmd_hash); i++) - INIT_LIST_HEAD(&queuedata->cmd_hash[i]); - spin_lock_init(&queuedata->cmd_hash_lock); - - return 0; - -cleanup_queue: - blk_cleanup_queue(q); - return err; -} -EXPORT_SYMBOL_GPL(scsi_tgt_alloc_queue); - -void scsi_tgt_free_queue(struct Scsi_Host *shost) -{ - int i; - unsigned long flags; - struct request_queue *q = shost->uspace_req_q; - struct scsi_cmnd *cmd; - struct scsi_tgt_queuedata *qdata = q->queuedata; - struct scsi_tgt_cmd *tcmd, *n; - LIST_HEAD(cmds); - - spin_lock_irqsave(&qdata->cmd_hash_lock, flags); - - for (i = 0; i < ARRAY_SIZE(qdata->cmd_hash); i++) { - list_for_each_entry_safe(tcmd, n, &qdata->cmd_hash[i], - hash_list) - list_move(&tcmd->hash_list, &cmds); - } - - spin_unlock_irqrestore(&qdata->cmd_hash_lock, flags); - - while (!list_empty(&cmds)) { - tcmd = list_entry(cmds.next, struct scsi_tgt_cmd, hash_list); - list_del(&tcmd->hash_list); - cmd = tcmd->rq->special; - - shost->hostt->eh_abort_handler(cmd); - scsi_tgt_cmd_destroy(&tcmd->work); - } -} -EXPORT_SYMBOL_GPL(scsi_tgt_free_queue); - -struct Scsi_Host *scsi_tgt_cmd_to_host(struct scsi_cmnd *cmd) -{ - struct scsi_tgt_queuedata *queue = cmd->request->q->queuedata; - return queue->shost; -} -EXPORT_SYMBOL_GPL(scsi_tgt_cmd_to_host); - -/* - * scsi_tgt_queue_command - queue command for userspace processing - * @cmd: scsi command - * @scsilun: scsi lun - * @tag: unique value to identify this command for tmf - */ -int scsi_tgt_queue_command(struct scsi_cmnd *cmd, u64 itn_id, - struct scsi_lun *scsilun, u64 tag) -{ - struct scsi_tgt_cmd *tcmd = cmd->request->end_io_data; - int err; - - init_scsi_tgt_cmd(cmd->request, tcmd, itn_id, tag); - err = scsi_tgt_uspace_send_cmd(cmd, itn_id, scsilun, tag); - if (err) - cmd_hashlist_del(cmd); - - return err; -} -EXPORT_SYMBOL_GPL(scsi_tgt_queue_command); - -/* - * This is run from a interrupt handler normally and the unmap - * needs process context so we must queue - */ -static void scsi_tgt_cmd_done(struct scsi_cmnd *cmd) -{ - struct scsi_tgt_cmd *tcmd = cmd->request->end_io_data; - - dprintk("cmd %p %u\n", cmd, rq_data_dir(cmd->request)); - - scsi_tgt_uspace_send_status(cmd, tcmd->itn_id, tcmd->tag); - - scsi_release_buffers(cmd); - - queue_work(scsi_tgtd, &tcmd->work); -} - -static int scsi_tgt_transfer_response(struct scsi_cmnd *cmd) -{ - struct Scsi_Host *shost = scsi_tgt_cmd_to_host(cmd); - int err; - - dprintk("cmd %p %u\n", cmd, rq_data_dir(cmd->request)); - - err = shost->hostt->transfer_response(cmd, scsi_tgt_cmd_done); - switch (err) { - case SCSI_MLQUEUE_HOST_BUSY: - case SCSI_MLQUEUE_DEVICE_BUSY: - return -EAGAIN; - } - return 0; -} - -/* TODO: test this crap and replace bio_map_user with new interface maybe */ -static int scsi_map_user_pages(struct scsi_tgt_cmd *tcmd, struct scsi_cmnd *cmd, - unsigned long uaddr, unsigned int len, int rw) -{ - struct request_queue *q = cmd->request->q; - struct request *rq = cmd->request; - int err; - - dprintk("%lx %u\n", uaddr, len); - err = blk_rq_map_user(q, rq, NULL, (void *)uaddr, len, GFP_KERNEL); - if (err) { - /* - * TODO: need to fixup sg_tablesize, max_segment_size, - * max_sectors, etc for modern HW and software drivers - * where this value is bogus. - * - * TODO2: we can alloc a reserve buffer of max size - * we can handle and do the slow copy path for really large - * IO. - */ - eprintk("Could not handle request of size %u.\n", len); - return err; - } - - tcmd->bio = rq->bio; - err = scsi_init_io(cmd, GFP_KERNEL); - if (err) { - scsi_release_buffers(cmd); - goto unmap_rq; - } - /* - * we use REQ_TYPE_BLOCK_PC so scsi_init_io doesn't set the - * length for us. - */ - cmd->sdb.length = blk_rq_bytes(rq); - - return 0; - -unmap_rq: - scsi_unmap_user_pages(tcmd); - return err; -} - -static int scsi_tgt_copy_sense(struct scsi_cmnd *cmd, unsigned long uaddr, - unsigned len) -{ - char __user *p = (char __user *) uaddr; - - if (copy_from_user(cmd->sense_buffer, p, - min_t(unsigned, SCSI_SENSE_BUFFERSIZE, len))) { - printk(KERN_ERR "Could not copy the sense buffer\n"); - return -EIO; - } - return 0; -} - -static int scsi_tgt_abort_cmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) -{ - struct scsi_tgt_cmd *tcmd; - int err; - - err = shost->hostt->eh_abort_handler(cmd); - if (err) - eprintk("fail to abort %p\n", cmd); - - tcmd = cmd->request->end_io_data; - scsi_tgt_cmd_destroy(&tcmd->work); - return err; -} - -static struct request *tgt_cmd_hash_lookup(struct request_queue *q, u64 tag) -{ - struct scsi_tgt_queuedata *qdata = q->queuedata; - struct request *rq = NULL; - struct list_head *head; - struct scsi_tgt_cmd *tcmd; - unsigned long flags; - - head = &qdata->cmd_hash[cmd_hashfn(tag)]; - spin_lock_irqsave(&qdata->cmd_hash_lock, flags); - list_for_each_entry(tcmd, head, hash_list) { - if (tcmd->tag == tag) { - rq = tcmd->rq; - list_del(&tcmd->hash_list); - break; - } - } - spin_unlock_irqrestore(&qdata->cmd_hash_lock, flags); - - return rq; -} - -int scsi_tgt_kspace_exec(int host_no, u64 itn_id, int result, u64 tag, - unsigned long uaddr, u32 len, unsigned long sense_uaddr, - u32 sense_len, u8 rw) -{ - struct Scsi_Host *shost; - struct scsi_cmnd *cmd; - struct request *rq; - struct scsi_tgt_cmd *tcmd; - int err = 0; - - dprintk("%d %llu %d %u %lx %u\n", host_no, (unsigned long long) tag, - result, len, uaddr, rw); - - /* TODO: replace with a O(1) alg */ - shost = scsi_host_lookup(host_no); - if (!shost) { - printk(KERN_ERR "Could not find host no %d\n", host_no); - return -EINVAL; - } - - if (!shost->uspace_req_q) { - printk(KERN_ERR "Not target scsi host %d\n", host_no); - goto done; - } - - rq = tgt_cmd_hash_lookup(shost->uspace_req_q, tag); - if (!rq) { - printk(KERN_ERR "Could not find tag %llu\n", - (unsigned long long) tag); - err = -EINVAL; - goto done; - } - cmd = rq->special; - - dprintk("cmd %p scb %x result %d len %d bufflen %u %u %x\n", - cmd, cmd->cmnd[0], result, len, scsi_bufflen(cmd), - rq_data_dir(rq), cmd->cmnd[0]); - - if (result == TASK_ABORTED) { - scsi_tgt_abort_cmd(shost, cmd); - goto done; - } - /* - * store the userspace values here, the working values are - * in the request_* values - */ - tcmd = cmd->request->end_io_data; - cmd->result = result; - - if (cmd->result == SAM_STAT_CHECK_CONDITION) - scsi_tgt_copy_sense(cmd, sense_uaddr, sense_len); - - if (len) { - err = scsi_map_user_pages(rq->end_io_data, cmd, uaddr, len, rw); - if (err) { - /* - * user-space daemon bugs or OOM - * TODO: we can do better for OOM. - */ - struct scsi_tgt_queuedata *qdata; - struct list_head *head; - unsigned long flags; - - eprintk("cmd %p ret %d uaddr %lx len %d rw %d\n", - cmd, err, uaddr, len, rw); - - qdata = shost->uspace_req_q->queuedata; - head = &qdata->cmd_hash[cmd_hashfn(tcmd->tag)]; - - spin_lock_irqsave(&qdata->cmd_hash_lock, flags); - list_add(&tcmd->hash_list, head); - spin_unlock_irqrestore(&qdata->cmd_hash_lock, flags); - - goto done; - } - } - err = scsi_tgt_transfer_response(cmd); -done: - scsi_host_put(shost); - return err; -} - -int scsi_tgt_tsk_mgmt_request(struct Scsi_Host *shost, u64 itn_id, - int function, u64 tag, struct scsi_lun *scsilun, - void *data) -{ - int err; - - /* TODO: need to retry if this fails. */ - err = scsi_tgt_uspace_send_tsk_mgmt(shost->host_no, itn_id, - function, tag, scsilun, data); - if (err < 0) - eprintk("The task management request lost!\n"); - return err; -} -EXPORT_SYMBOL_GPL(scsi_tgt_tsk_mgmt_request); - -int scsi_tgt_kspace_tsk_mgmt(int host_no, u64 itn_id, u64 mid, int result) -{ - struct Scsi_Host *shost; - int err = -EINVAL; - - dprintk("%d %d %llx\n", host_no, result, (unsigned long long) mid); - - shost = scsi_host_lookup(host_no); - if (!shost) { - printk(KERN_ERR "Could not find host no %d\n", host_no); - return err; - } - - if (!shost->uspace_req_q) { - printk(KERN_ERR "Not target scsi host %d\n", host_no); - goto done; - } - - err = shost->transportt->tsk_mgmt_response(shost, itn_id, mid, result); -done: - scsi_host_put(shost); - return err; -} - -int scsi_tgt_it_nexus_create(struct Scsi_Host *shost, u64 itn_id, - char *initiator) -{ - int err; - - /* TODO: need to retry if this fails. */ - err = scsi_tgt_uspace_send_it_nexus_request(shost->host_no, itn_id, 0, - initiator); - if (err < 0) - eprintk("The i_t_neuxs request lost, %d %llx!\n", - shost->host_no, (unsigned long long)itn_id); - return err; -} -EXPORT_SYMBOL_GPL(scsi_tgt_it_nexus_create); - -int scsi_tgt_it_nexus_destroy(struct Scsi_Host *shost, u64 itn_id) -{ - int err; - - /* TODO: need to retry if this fails. */ - err = scsi_tgt_uspace_send_it_nexus_request(shost->host_no, - itn_id, 1, NULL); - if (err < 0) - eprintk("The i_t_neuxs request lost, %d %llx!\n", - shost->host_no, (unsigned long long)itn_id); - return err; -} -EXPORT_SYMBOL_GPL(scsi_tgt_it_nexus_destroy); - -int scsi_tgt_kspace_it_nexus_rsp(int host_no, u64 itn_id, int result) -{ - struct Scsi_Host *shost; - int err = -EINVAL; - - dprintk("%d %d%llx\n", host_no, result, (unsigned long long)itn_id); - - shost = scsi_host_lookup(host_no); - if (!shost) { - printk(KERN_ERR "Could not find host no %d\n", host_no); - return err; - } - - if (!shost->uspace_req_q) { - printk(KERN_ERR "Not target scsi host %d\n", host_no); - goto done; - } - - err = shost->transportt->it_nexus_response(shost, itn_id, result); -done: - scsi_host_put(shost); - return err; -} - -static int __init scsi_tgt_init(void) -{ - int err; - - scsi_tgt_cmd_cache = KMEM_CACHE(scsi_tgt_cmd, 0); - if (!scsi_tgt_cmd_cache) - return -ENOMEM; - - scsi_tgtd = alloc_workqueue("scsi_tgtd", 0, 1); - if (!scsi_tgtd) { - err = -ENOMEM; - goto free_kmemcache; - } - - err = scsi_tgt_if_init(); - if (err) - goto destroy_wq; - - return 0; - -destroy_wq: - destroy_workqueue(scsi_tgtd); -free_kmemcache: - kmem_cache_destroy(scsi_tgt_cmd_cache); - return err; -} - -static void __exit scsi_tgt_exit(void) -{ - destroy_workqueue(scsi_tgtd); - scsi_tgt_if_exit(); - kmem_cache_destroy(scsi_tgt_cmd_cache); -} - -module_init(scsi_tgt_init); -module_exit(scsi_tgt_exit); - -MODULE_DESCRIPTION("SCSI target core"); -MODULE_LICENSE("GPL"); diff --git a/drivers/scsi/scsi_tgt_priv.h b/drivers/scsi/scsi_tgt_priv.h deleted file mode 100644 index fe4c62177f7..00000000000 --- a/drivers/scsi/scsi_tgt_priv.h +++ /dev/null @@ -1,32 +0,0 @@ -struct scsi_cmnd; -struct scsi_lun; -struct Scsi_Host; -struct task_struct; - -/* tmp - will replace with SCSI logging stuff */ -#define eprintk(fmt, args...) \ -do { \ - printk("%s(%d) " fmt, __func__, __LINE__, ##args); \ -} while (0) - -#define dprintk(fmt, args...) -/* #define dprintk eprintk */ - -extern void scsi_tgt_if_exit(void); -extern int scsi_tgt_if_init(void); - -extern int scsi_tgt_uspace_send_cmd(struct scsi_cmnd *cmd, u64 it_nexus_id, - struct scsi_lun *lun, u64 tag); -extern int scsi_tgt_uspace_send_status(struct scsi_cmnd *cmd, u64 it_nexus_id, - u64 tag); -extern int scsi_tgt_kspace_exec(int host_no, u64 it_nexus_id, int result, u64 tag, - unsigned long uaddr, u32 len, - unsigned long sense_uaddr, u32 sense_len, u8 rw); -extern int scsi_tgt_uspace_send_tsk_mgmt(int host_no, u64 it_nexus_id, - int function, u64 tag, - struct scsi_lun *scsilun, void *data); -extern int scsi_tgt_kspace_tsk_mgmt(int host_no, u64 it_nexus_id, - u64 mid, int result); -extern int scsi_tgt_uspace_send_it_nexus_request(int host_no, u64 it_nexus_id, - int function, char *initiator); -extern int scsi_tgt_kspace_it_nexus_rsp(int host_no, u64 it_nexus_id, int result); diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index 8365705c231..4b0f167e8c2 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -39,7 +39,6 @@ #include <scsi/scsi_netlink_fc.h> #include <scsi/scsi_bsg_fc.h> #include "scsi_priv.h" -#include "scsi_transport_fc_internal.h" static int fc_queue_work(struct Scsi_Host *, struct work_struct *); static void fc_vport_sched_delete(struct work_struct *work); @@ -3008,10 +3007,6 @@ fc_remote_port_delete(struct fc_rport *rport) spin_unlock_irqrestore(shost->host_lock, flags); - if (rport->roles & FC_PORT_ROLE_FCP_INITIATOR && - shost->active_mode & MODE_TARGET) - fc_tgt_it_nexus_destroy(shost, (unsigned long)rport); - scsi_target_block(&rport->dev); /* see if we need to kill io faster than waiting for device loss */ @@ -3052,7 +3047,6 @@ fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) struct fc_host_attrs *fc_host = shost_to_fc_host(shost); unsigned long flags; int create = 0; - int ret; spin_lock_irqsave(shost->host_lock, flags); if (roles & FC_PORT_ROLE_FCP_TARGET) { @@ -3061,12 +3055,6 @@ fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) create = 1; } else if (!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) create = 1; - } else if (shost->active_mode & MODE_TARGET) { - ret = fc_tgt_it_nexus_create(shost, (unsigned long)rport, - (char *)&rport->node_name); - if (ret) - printk(KERN_ERR "FC Remore Port tgt nexus failed %d\n", - ret); } rport->roles = roles; diff --git a/drivers/scsi/scsi_transport_fc_internal.h b/drivers/scsi/scsi_transport_fc_internal.h deleted file mode 100644 index e7bfbe751c1..00000000000 --- a/drivers/scsi/scsi_transport_fc_internal.h +++ /dev/null @@ -1,26 +0,0 @@ -#include <scsi/scsi_tgt.h> - -#ifdef CONFIG_SCSI_FC_TGT_ATTRS -static inline int fc_tgt_it_nexus_create(struct Scsi_Host *shost, u64 itn_id, - char *initiator) -{ - return scsi_tgt_it_nexus_create(shost, itn_id, initiator); -} - -static inline int fc_tgt_it_nexus_destroy(struct Scsi_Host *shost, u64 itn_id) -{ - return scsi_tgt_it_nexus_destroy(shost, itn_id); -} -#else -static inline int fc_tgt_it_nexus_create(struct Scsi_Host *shost, u64 itn_id, - char *initiator) -{ - return 0; -} - -static inline int fc_tgt_it_nexus_destroy(struct Scsi_Host *shost, u64 itn_id) -{ - return 0; -} - -#endif diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c index 13e898332e4..43fea2219f8 100644 --- a/drivers/scsi/scsi_transport_srp.c +++ b/drivers/scsi/scsi_transport_srp.c @@ -33,7 +33,6 @@ #include <scsi/scsi_transport.h> #include <scsi/scsi_transport_srp.h> #include "scsi_priv.h" -#include "scsi_transport_srp_internal.h" struct srp_host_attrs { atomic_t next_port_id; @@ -746,18 +745,6 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost, return ERR_PTR(ret); } - if (shost->active_mode & MODE_TARGET && - ids->roles == SRP_RPORT_ROLE_INITIATOR) { - ret = srp_tgt_it_nexus_create(shost, (unsigned long)rport, - rport->port_id); - if (ret) { - device_del(&rport->dev); - transport_destroy_device(&rport->dev); - put_device(&rport->dev); - return ERR_PTR(ret); - } - } - transport_add_device(&rport->dev); transport_configure_device(&rport->dev); @@ -774,11 +761,6 @@ EXPORT_SYMBOL_GPL(srp_rport_add); void srp_rport_del(struct srp_rport *rport) { struct device *dev = &rport->dev; - struct Scsi_Host *shost = dev_to_shost(dev->parent); - - if (shost->active_mode & MODE_TARGET && - rport->roles == SRP_RPORT_ROLE_INITIATOR) - srp_tgt_it_nexus_destroy(shost, (unsigned long)rport); transport_remove_device(dev); device_del(dev); diff --git a/drivers/scsi/scsi_transport_srp_internal.h b/drivers/scsi/scsi_transport_srp_internal.h deleted file mode 100644 index 8a79747f9f3..00000000000 --- a/drivers/scsi/scsi_transport_srp_internal.h +++ /dev/null @@ -1,25 +0,0 @@ -#include <scsi/scsi_tgt.h> - -#ifdef CONFIG_SCSI_SRP_TGT_ATTRS -static inline int srp_tgt_it_nexus_create(struct Scsi_Host *shost, u64 itn_id, - char *initiator) -{ - return scsi_tgt_it_nexus_create(shost, itn_id, initiator); -} - -static inline int srp_tgt_it_nexus_destroy(struct Scsi_Host *shost, u64 itn_id) -{ - return scsi_tgt_it_nexus_destroy(shost, itn_id); -} - -#else -static inline int srp_tgt_it_nexus_create(struct Scsi_Host *shost, u64 itn_id, - char *initiator) -{ - return 0; -} -static inline int srp_tgt_it_nexus_destroy(struct Scsi_Host *shost, u64 itn_id) -{ - return 0; -} -#endif diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index abb695882fe..f7adfe0a6dc 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -132,27 +132,6 @@ struct scsi_host_template { int (* queuecommand)(struct Scsi_Host *, struct scsi_cmnd *); /* - * The transfer functions are used to queue a scsi command to - * the LLD. When the driver is finished processing the command - * the done callback is invoked. - * - * This is called to inform the LLD to transfer - * scsi_bufflen(cmd) bytes. scsi_sg_count(cmd) speciefies the - * number of scatterlist entried in the command and - * scsi_sglist(cmd) returns the scatterlist. - * - * return values: see queuecommand - * - * If the LLD accepts the cmd, it should set the result to an - * appropriate value when completed before calling the done function. - * - * STATUS: REQUIRED FOR TARGET DRIVERS - */ - /* TODO: rename */ - int (* transfer_response)(struct scsi_cmnd *, - void (*done)(struct scsi_cmnd *)); - - /* * This is an error handling strategy routine. You don't need to * define one of these if you don't want to - there is a default * routine that is present that should work in most cases. For those diff --git a/include/scsi/scsi_tgt.h b/include/scsi/scsi_tgt.h deleted file mode 100644 index d0fefb96158..00000000000 --- a/include/scsi/scsi_tgt.h +++ /dev/null @@ -1,21 +0,0 @@ -/* - * SCSI target definitions - */ - -#include <linux/dma-mapping.h> - -struct Scsi_Host; -struct scsi_cmnd; -struct scsi_lun; - -extern struct Scsi_Host *scsi_tgt_cmd_to_host(struct scsi_cmnd *); -extern int scsi_tgt_alloc_queue(struct Scsi_Host *); -extern void scsi_tgt_free_queue(struct Scsi_Host *); -extern int scsi_tgt_queue_command(struct scsi_cmnd *, u64, struct scsi_lun *, u64); -extern int scsi_tgt_tsk_mgmt_request(struct Scsi_Host *, u64, int, u64, - struct scsi_lun *, void *); -extern struct scsi_cmnd *scsi_host_get_command(struct Scsi_Host *, - enum dma_data_direction, gfp_t); -extern void scsi_host_put_command(struct Scsi_Host *, struct scsi_cmnd *); -extern int scsi_tgt_it_nexus_create(struct Scsi_Host *, u64, char *); -extern int scsi_tgt_it_nexus_destroy(struct Scsi_Host *, u64); diff --git a/include/scsi/scsi_tgt_if.h b/include/scsi/scsi_tgt_if.h deleted file mode 100644 index f2ee7c238a4..00000000000 --- a/include/scsi/scsi_tgt_if.h +++ /dev/null @@ -1,108 +0,0 @@ -/* - * SCSI target kernel/user interface - * - * Copyright (C) 2005 FUJITA Tomonori <tomof@acm.org> - * Copyright (C) 2005 Mike Christie <michaelc@cs.wisc.edu> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ -#ifndef __SCSI_TARGET_IF_H -#define __SCSI_TARGET_IF_H - -/* user -> kernel */ -#define TGT_UEVENT_CMD_RSP 0x0001 -#define TGT_UEVENT_IT_NEXUS_RSP 0x0002 -#define TGT_UEVENT_TSK_MGMT_RSP 0x0003 - -/* kernel -> user */ -#define TGT_KEVENT_CMD_REQ 0x1001 -#define TGT_KEVENT_CMD_DONE 0x1002 -#define TGT_KEVENT_IT_NEXUS_REQ 0x1003 -#define TGT_KEVENT_TSK_MGMT_REQ 0x1004 - -struct tgt_event_hdr { - uint16_t version; - uint16_t status; - uint16_t type; - uint16_t len; -} __attribute__ ((aligned (sizeof(uint64_t)))); - -struct tgt_event { - struct tgt_event_hdr hdr; - - union { - /* user-> kernel */ - struct { - int host_no; - int result; - aligned_u64 itn_id; - aligned_u64 tag; - aligned_u64 uaddr; - aligned_u64 sense_uaddr; - uint32_t len; - uint32_t sense_len; - uint8_t rw; - } cmd_rsp; - struct { - int host_no; - int result; - aligned_u64 itn_id; - aligned_u64 mid; - } tsk_mgmt_rsp; - struct { - __s32 host_no; - __s32 result; - aligned_u64 itn_id; - __u32 function; - } it_nexus_rsp; - - /* kernel -> user */ - struct { - int host_no; - uint32_t data_len; - aligned_u64 itn_id; - uint8_t scb[16]; - uint8_t lun[8]; - int attribute; - aligned_u64 tag; - } cmd_req; - struct { - int host_no; - int result; - aligned_u64 itn_id; - aligned_u64 tag; - } cmd_done; - struct { - int host_no; - int function; - aligned_u64 itn_id; - aligned_u64 tag; - uint8_t lun[8]; - aligned_u64 mid; - } tsk_mgmt_req; - struct { - __s32 host_no; - __u32 function; - aligned_u64 itn_id; - __u32 max_cmds; - __u8 initiator_id[16]; - } it_nexus_req; - } p; -} __attribute__ ((aligned (sizeof(uint64_t)))); - -#define TGT_RING_SIZE (1UL << 16) - -#endif |