X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=drivers%2Fscsi%2Fscsi_tgt_lib.c;h=a91761c3645f4d06b17237aa26deb5fb086a9e39;hb=2d175d438f297bcd75a7b88baf3a304137047af6;hp=2570f48a69c7a78c40ddd325fc9c0a305fcc19b9;hpb=ba7cc09c9c9e29a57045dc5bbf843ac1cfad3283;p=~andy%2Flinux diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c index 2570f48a69c..a91761c3645 100644 --- a/drivers/scsi/scsi_tgt_lib.c +++ b/drivers/scsi/scsi_tgt_lib.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include "scsi_tgt_priv.h" @@ -46,6 +47,7 @@ struct scsi_tgt_cmd { struct list_head hash_list; struct request *rq; + u64 itn_id; u64 tag; }; @@ -185,12 +187,13 @@ static void scsi_tgt_cmd_destroy(struct work_struct *work) } static void init_scsi_tgt_cmd(struct request *rq, struct scsi_tgt_cmd *tcmd, - u64 tag) + 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); @@ -234,7 +237,7 @@ int scsi_tgt_alloc_queue(struct Scsi_Host *shost) * command as is recvd to userspace. uspace can then make * sure we do not overload the HBA */ - q->nr_requests = shost->hostt->can_queue; + 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? @@ -301,14 +304,14 @@ EXPORT_SYMBOL_GPL(scsi_tgt_cmd_to_host); * @scsilun: scsi lun * @tag: unique value to identify this command for tmf */ -int scsi_tgt_queue_command(struct scsi_cmnd *cmd, struct scsi_lun *scsilun, - u64 tag) +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, tag); - err = scsi_tgt_uspace_send_cmd(cmd, scsilun, tag); + 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); @@ -326,10 +329,10 @@ static void scsi_tgt_cmd_done(struct scsi_cmnd *cmd) dprintk("cmd %p %lu\n", cmd, rq_data_dir(cmd->request)); - scsi_tgt_uspace_send_status(cmd, tcmd->tag); + scsi_tgt_uspace_send_status(cmd, tcmd->itn_id, tcmd->tag); if (cmd->request_buffer) - scsi_free_sgtable(cmd->request_buffer, cmd->sglist_len); + scsi_free_sgtable(cmd); queue_work(scsi_tgtd, &tcmd->work); } @@ -370,7 +373,7 @@ static int scsi_tgt_init_cmd(struct scsi_cmnd *cmd, gfp_t gfp_mask) } eprintk("cmd %p cnt %d\n", cmd, cmd->use_sg); - scsi_free_sgtable(cmd->request_buffer, cmd->sglist_len); + scsi_free_sgtable(cmd); return -EINVAL; } @@ -459,7 +462,7 @@ static struct request *tgt_cmd_hash_lookup(struct request_queue *q, u64 tag) return rq; } -int scsi_tgt_kspace_exec(int host_no, int result, u64 tag, +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) { @@ -541,21 +544,22 @@ done: return err; } -int scsi_tgt_tsk_mgmt_request(struct Scsi_Host *shost, int function, u64 tag, - struct scsi_lun *scsilun, void *data) +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, function, - tag, scsilun, data); + 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 mid, int result) +int scsi_tgt_kspace_tsk_mgmt(int host_no, u64 itn_id, u64 mid, int result) { struct Scsi_Host *shost; int err = -EINVAL; @@ -573,7 +577,60 @@ int scsi_tgt_kspace_tsk_mgmt(int host_no, u64 mid, int result) goto done; } - err = shost->hostt->tsk_mgmt_response(mid, result); + 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) mid); + + shost = scsi_host_lookup(host_no); + if (IS_ERR(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; @@ -585,7 +642,7 @@ static int __init scsi_tgt_init(void) scsi_tgt_cmd_cache = kmem_cache_create("scsi_tgt_cmd", sizeof(struct scsi_tgt_cmd), - 0, 0, NULL, NULL); + 0, 0, NULL); if (!scsi_tgt_cmd_cache) return -ENOMEM;