X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fscsi%2Fscsi_tgt_if.c;h=0e9533f7aabc4bcd38befa28c1727db45cd41a1e;hb=e2f0ba97d60e59fe5c6237851933a9c38a8f9a24;hp=f2344ab8deff882b3dc00f20351626562c0085f3;hpb=00977a59b951207d38380c75f03a36829950265c;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/scsi/scsi_tgt_if.c b/drivers/scsi/scsi_tgt_if.c
index f2344ab..0e9533f 100644
--- a/drivers/scsi/scsi_tgt_if.c
+++ b/drivers/scsi/scsi_tgt_if.c
@@ -21,6 +21,7 @@
  */
 #include <linux/miscdevice.h>
 #include <linux/file.h>
+#include <linux/smp_lock.h>
 #include <net/tcp.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -33,6 +34,14 @@
 
 #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];
@@ -94,7 +103,8 @@ static int tgt_uspace_send_event(u32 type, struct tgt_event *p)
 	return 0;
 }
 
-int scsi_tgt_uspace_send_cmd(struct scsi_cmnd *cmd, struct scsi_lun *lun, u64 tag)
+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;
@@ -102,7 +112,8 @@ int scsi_tgt_uspace_send_cmd(struct scsi_cmnd *cmd, struct scsi_lun *lun, u64 ta
 
 	memset(&ev, 0, sizeof(ev));
 	ev.p.cmd_req.host_no = shost->host_no;
-	ev.p.cmd_req.data_len = cmd->request_bufflen;
+	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;
@@ -119,7 +130,7 @@ int scsi_tgt_uspace_send_cmd(struct scsi_cmnd *cmd, struct scsi_lun *lun, u64 ta
 	return err;
 }
 
-int scsi_tgt_uspace_send_status(struct scsi_cmnd *cmd, u64 tag)
+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;
@@ -127,6 +138,7 @@ int scsi_tgt_uspace_send_status(struct scsi_cmnd *cmd, u64 tag)
 
 	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;
 
@@ -141,14 +153,15 @@ int scsi_tgt_uspace_send_status(struct scsi_cmnd *cmd, u64 tag)
 	return err;
 }
 
-int scsi_tgt_uspace_send_tsk_mgmt(int host_no, int function, u64 tag,
-				  struct scsi_lun *scsilun, void *data)
+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));
@@ -164,6 +177,29 @@ int scsi_tgt_uspace_send_tsk_mgmt(int host_no, int function, u64 tag,
 	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;
@@ -171,17 +207,26 @@ static int event_recv_msg(struct tgt_event *ev)
 	switch (ev->hdr.type) {
 	case TGT_UEVENT_CMD_RSP:
 		err = scsi_tgt_kspace_exec(ev->p.cmd_rsp.host_no,
-					   ev->p.cmd_rsp.tag,
+					   ev->p.cmd_rsp.itn_id,
 					   ev->p.cmd_rsp.result,
-					   ev->p.cmd_rsp.len,
+					   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;
@@ -277,6 +322,7 @@ static int tgt_open(struct inode *inode, struct file *file)
 {
 	tx_ring.tr_idx = rx_ring.tr_idx = 0;
 
+	cycle_kernel_lock();
 	return 0;
 }