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Date: Thu, 2 May 2013 04:45:41 +0300
From: "Michael S. Tsirkin" <mst@...hat.com>
To: unlisted-recipients:; (no To-header on input)
Cc: "Michael S. Tsirkin" <mst@...hat.com>,
Nicholas Bellinger <nab@...ux-iscsi.org>,
Asias He <asias@...hat.com>,
Stefan Hajnoczi <stefanha@...hat.com>,
linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: [PATCH 2/3] tcm_vhost: header split up
move uapi parts to vhost.h
move .c private parts to .c itself
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
drivers/vhost/scsi.c | 112 +++++++++++++++++++++++++++++++++++---
drivers/vhost/tcm_vhost.h | 131 ---------------------------------------------
include/uapi/linux/vhost.h | 28 ++++++++++
3 files changed, 132 insertions(+), 139 deletions(-)
delete mode 100644 drivers/vhost/tcm_vhost.h
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 19ca021..eb1aa56 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -51,7 +51,110 @@
#include "vhost.c"
#include "vhost.h"
-#include "tcm_vhost.h"
+
+#define TCM_VHOST_VERSION "v0.1"
+#define TCM_VHOST_NAMELEN 256
+#define TCM_VHOST_MAX_CDB_SIZE 32
+
+struct vhost_scsi_inflight {
+ /* Wait for the flush operation to finish */
+ struct completion comp;
+ /* Refcount for the inflight reqs */
+ struct kref kref;
+};
+
+struct tcm_vhost_cmd {
+ /* Descriptor from vhost_get_vq_desc() for virt_queue segment */
+ int tvc_vq_desc;
+ /* virtio-scsi initiator task attribute */
+ int tvc_task_attr;
+ /* virtio-scsi initiator data direction */
+ enum dma_data_direction tvc_data_direction;
+ /* Expected data transfer length from virtio-scsi header */
+ u32 tvc_exp_data_len;
+ /* The Tag from include/linux/virtio_scsi.h:struct virtio_scsi_cmd_req */
+ u64 tvc_tag;
+ /* The number of scatterlists associated with this cmd */
+ u32 tvc_sgl_count;
+ /* Saved unpacked SCSI LUN for tcm_vhost_submission_work() */
+ u32 tvc_lun;
+ /* Pointer to the SGL formatted memory from virtio-scsi */
+ struct scatterlist *tvc_sgl;
+ /* Pointer to response */
+ struct virtio_scsi_cmd_resp __user *tvc_resp;
+ /* Pointer to vhost_scsi for our device */
+ struct vhost_scsi *tvc_vhost;
+ /* Pointer to vhost_virtqueue for the cmd */
+ struct vhost_virtqueue *tvc_vq;
+ /* Pointer to vhost nexus memory */
+ struct tcm_vhost_nexus *tvc_nexus;
+ /* The TCM I/O descriptor that is accessed via container_of() */
+ struct se_cmd tvc_se_cmd;
+ /* work item used for cmwq dispatch to tcm_vhost_submission_work() */
+ struct work_struct work;
+ /* Copy of the incoming SCSI command descriptor block (CDB) */
+ unsigned char tvc_cdb[TCM_VHOST_MAX_CDB_SIZE];
+ /* Sense buffer that will be mapped into outgoing status */
+ unsigned char tvc_sense_buf[TRANSPORT_SENSE_BUFFER];
+ /* Completed commands list, serviced from vhost worker thread */
+ struct llist_node tvc_completion_list;
+ /* Used to track inflight cmd */
+ struct vhost_scsi_inflight *inflight;
+};
+
+struct tcm_vhost_nexus {
+ /* Pointer to TCM session for I_T Nexus */
+ struct se_session *tvn_se_sess;
+};
+
+struct tcm_vhost_nacl {
+ /* Binary World Wide unique Port Name for Vhost Initiator port */
+ u64 iport_wwpn;
+ /* ASCII formatted WWPN for Sas Initiator port */
+ char iport_name[TCM_VHOST_NAMELEN];
+ /* Returned by tcm_vhost_make_nodeacl() */
+ struct se_node_acl se_node_acl;
+};
+
+struct vhost_scsi;
+struct tcm_vhost_tpg {
+ /* Vhost port target portal group tag for TCM */
+ u16 tport_tpgt;
+ /* Used to track number of TPG Port/Lun Links wrt to explict I_T Nexus shutdown */
+ int tv_tpg_port_count;
+ /* Used for vhost_scsi device reference to tpg_nexus, protected by tv_tpg_mutex */
+ int tv_tpg_vhost_count;
+ /* list for tcm_vhost_list */
+ struct list_head tv_tpg_list;
+ /* Used to protect access for tpg_nexus */
+ struct mutex tv_tpg_mutex;
+ /* Pointer to the TCM VHost I_T Nexus for this TPG endpoint */
+ struct tcm_vhost_nexus *tpg_nexus;
+ /* Pointer back to tcm_vhost_tport */
+ struct tcm_vhost_tport *tport;
+ /* Returned by tcm_vhost_make_tpg() */
+ struct se_portal_group se_tpg;
+ /* Pointer back to vhost_scsi, protected by tv_tpg_mutex */
+ struct vhost_scsi *vhost_scsi;
+};
+
+struct tcm_vhost_tport {
+ /* SCSI protocol the tport is providing */
+ u8 tport_proto_id;
+ /* Binary World Wide unique Port Name for Vhost Target port */
+ u64 tport_wwpn;
+ /* ASCII formatted WWPN for Vhost Target port */
+ char tport_name[TCM_VHOST_NAMELEN];
+ /* Returned by tcm_vhost_make_tport() */
+ struct se_wwn tport_wwn;
+};
+
+struct tcm_vhost_evt {
+ /* event to be sent to guest */
+ struct virtio_scsi_event event;
+ /* event list, serviced from vhost worker thread */
+ struct llist_node list;
+};
enum {
VHOST_SCSI_VQ_CTL = 0,
@@ -73,13 +176,6 @@ enum {
#define VHOST_SCSI_MAX_VQ 128
#define VHOST_SCSI_MAX_EVENT 128
-struct vhost_scsi_inflight {
- /* Wait for the flush operation to finish */
- struct completion comp;
- /* Refcount for the inflight reqs */
- struct kref kref;
-};
-
struct vhost_scsi_virtqueue {
struct vhost_virtqueue vq;
/*
diff --git a/drivers/vhost/tcm_vhost.h b/drivers/vhost/tcm_vhost.h
deleted file mode 100644
index 26a57c2..0000000
--- a/drivers/vhost/tcm_vhost.h
+++ /dev/null
@@ -1,131 +0,0 @@
-#define TCM_VHOST_VERSION "v0.1"
-#define TCM_VHOST_NAMELEN 256
-#define TCM_VHOST_MAX_CDB_SIZE 32
-
-struct vhost_scsi_inflight;
-struct tcm_vhost_cmd {
- /* Descriptor from vhost_get_vq_desc() for virt_queue segment */
- int tvc_vq_desc;
- /* virtio-scsi initiator task attribute */
- int tvc_task_attr;
- /* virtio-scsi initiator data direction */
- enum dma_data_direction tvc_data_direction;
- /* Expected data transfer length from virtio-scsi header */
- u32 tvc_exp_data_len;
- /* The Tag from include/linux/virtio_scsi.h:struct virtio_scsi_cmd_req */
- u64 tvc_tag;
- /* The number of scatterlists associated with this cmd */
- u32 tvc_sgl_count;
- /* Saved unpacked SCSI LUN for tcm_vhost_submission_work() */
- u32 tvc_lun;
- /* Pointer to the SGL formatted memory from virtio-scsi */
- struct scatterlist *tvc_sgl;
- /* Pointer to response */
- struct virtio_scsi_cmd_resp __user *tvc_resp;
- /* Pointer to vhost_scsi for our device */
- struct vhost_scsi *tvc_vhost;
- /* Pointer to vhost_virtqueue for the cmd */
- struct vhost_virtqueue *tvc_vq;
- /* Pointer to vhost nexus memory */
- struct tcm_vhost_nexus *tvc_nexus;
- /* The TCM I/O descriptor that is accessed via container_of() */
- struct se_cmd tvc_se_cmd;
- /* work item used for cmwq dispatch to tcm_vhost_submission_work() */
- struct work_struct work;
- /* Copy of the incoming SCSI command descriptor block (CDB) */
- unsigned char tvc_cdb[TCM_VHOST_MAX_CDB_SIZE];
- /* Sense buffer that will be mapped into outgoing status */
- unsigned char tvc_sense_buf[TRANSPORT_SENSE_BUFFER];
- /* Completed commands list, serviced from vhost worker thread */
- struct llist_node tvc_completion_list;
- /* Used to track inflight cmd */
- struct vhost_scsi_inflight *inflight;
-};
-
-struct tcm_vhost_nexus {
- /* Pointer to TCM session for I_T Nexus */
- struct se_session *tvn_se_sess;
-};
-
-struct tcm_vhost_nacl {
- /* Binary World Wide unique Port Name for Vhost Initiator port */
- u64 iport_wwpn;
- /* ASCII formatted WWPN for Sas Initiator port */
- char iport_name[TCM_VHOST_NAMELEN];
- /* Returned by tcm_vhost_make_nodeacl() */
- struct se_node_acl se_node_acl;
-};
-
-struct vhost_scsi;
-struct tcm_vhost_tpg {
- /* Vhost port target portal group tag for TCM */
- u16 tport_tpgt;
- /* Used to track number of TPG Port/Lun Links wrt to explict I_T Nexus shutdown */
- int tv_tpg_port_count;
- /* Used for vhost_scsi device reference to tpg_nexus, protected by tv_tpg_mutex */
- int tv_tpg_vhost_count;
- /* list for tcm_vhost_list */
- struct list_head tv_tpg_list;
- /* Used to protect access for tpg_nexus */
- struct mutex tv_tpg_mutex;
- /* Pointer to the TCM VHost I_T Nexus for this TPG endpoint */
- struct tcm_vhost_nexus *tpg_nexus;
- /* Pointer back to tcm_vhost_tport */
- struct tcm_vhost_tport *tport;
- /* Returned by tcm_vhost_make_tpg() */
- struct se_portal_group se_tpg;
- /* Pointer back to vhost_scsi, protected by tv_tpg_mutex */
- struct vhost_scsi *vhost_scsi;
-};
-
-struct tcm_vhost_tport {
- /* SCSI protocol the tport is providing */
- u8 tport_proto_id;
- /* Binary World Wide unique Port Name for Vhost Target port */
- u64 tport_wwpn;
- /* ASCII formatted WWPN for Vhost Target port */
- char tport_name[TCM_VHOST_NAMELEN];
- /* Returned by tcm_vhost_make_tport() */
- struct se_wwn tport_wwn;
-};
-
-struct tcm_vhost_evt {
- /* event to be sent to guest */
- struct virtio_scsi_event event;
- /* event list, serviced from vhost worker thread */
- struct llist_node list;
-};
-
-/*
- * As per request from MST, keep TCM_VHOST related ioctl defines out of
- * linux/vhost.h (user-space) for now..
- */
-
-#include <linux/vhost.h>
-
-/*
- * Used by QEMU userspace to ensure a consistent vhost-scsi ABI.
- *
- * ABI Rev 0: July 2012 version starting point for v3.6-rc merge candidate +
- * RFC-v2 vhost-scsi userspace. Add GET_ABI_VERSION ioctl usage
- * ABI Rev 1: January 2013. Ignore vhost_tpgt filed in struct vhost_scsi_target.
- * All the targets under vhost_wwpn can be seen and used by guset.
- */
-
-#define VHOST_SCSI_ABI_VERSION 1
-
-struct vhost_scsi_target {
- int abi_version;
- char vhost_wwpn[TRANSPORT_IQN_LEN];
- unsigned short vhost_tpgt;
- unsigned short reserved;
-};
-
-/* VHOST_SCSI specific defines */
-#define VHOST_SCSI_SET_ENDPOINT _IOW(VHOST_VIRTIO, 0x40, struct vhost_scsi_target)
-#define VHOST_SCSI_CLEAR_ENDPOINT _IOW(VHOST_VIRTIO, 0x41, struct vhost_scsi_target)
-/* Changing this breaks userspace. */
-#define VHOST_SCSI_GET_ABI_VERSION _IOW(VHOST_VIRTIO, 0x42, int)
-/* Set and get the events missed flag */
-#define VHOST_SCSI_SET_EVENTS_MISSED _IOW(VHOST_VIRTIO, 0x43, __u32)
-#define VHOST_SCSI_GET_EVENTS_MISSED _IOW(VHOST_VIRTIO, 0x44, __u32)
diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h
index e847f1e..bb6a5b4 100644
--- a/include/uapi/linux/vhost.h
+++ b/include/uapi/linux/vhost.h
@@ -127,4 +127,32 @@ struct vhost_memory {
/* vhost-net should add virtio_net_hdr for RX, and strip for TX packets. */
#define VHOST_NET_F_VIRTIO_NET_HDR 27
+/* VHOST_SCSI specific definitions */
+
+/*
+ * Used by QEMU userspace to ensure a consistent vhost-scsi ABI.
+ *
+ * ABI Rev 0: July 2012 version starting point for v3.6-rc merge candidate +
+ * RFC-v2 vhost-scsi userspace. Add GET_ABI_VERSION ioctl usage
+ * ABI Rev 1: January 2013. Ignore vhost_tpgt filed in struct vhost_scsi_target.
+ * All the targets under vhost_wwpn can be seen and used by guset.
+ */
+
+#define VHOST_SCSI_ABI_VERSION 1
+
+struct vhost_scsi_target {
+ int abi_version;
+ char vhost_wwpn[224]; /* TRANSPORT_IQN_LEN */
+ unsigned short vhost_tpgt;
+ unsigned short reserved;
+};
+
+#define VHOST_SCSI_SET_ENDPOINT _IOW(VHOST_VIRTIO, 0x40, struct vhost_scsi_target)
+#define VHOST_SCSI_CLEAR_ENDPOINT _IOW(VHOST_VIRTIO, 0x41, struct vhost_scsi_target)
+/* Changing this breaks userspace. */
+#define VHOST_SCSI_GET_ABI_VERSION _IOW(VHOST_VIRTIO, 0x42, int)
+/* Set and get the events missed flag */
+#define VHOST_SCSI_SET_EVENTS_MISSED _IOW(VHOST_VIRTIO, 0x43, __u32)
+#define VHOST_SCSI_GET_EVENTS_MISSED _IOW(VHOST_VIRTIO, 0x44, __u32)
+
#endif
--
MST
--
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