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author | Asias He <asias@redhat.com> | 2013-02-05 12:31:57 +0800 |
---|---|---|
committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-02-13 11:29:53 -0800 |
commit | 67e18cf9ab21648a477e91e0d3cb6dbdb1330262 (patch) | |
tree | 2f39e32dfe7c2794082d61aea95dcdee38e5e4ae /drivers/vhost/tcm_vhost.h | |
parent | adfa9570a56c3dbfc2a28baab77ff6f0b8f480d3 (diff) | |
download | op-kernel-dev-67e18cf9ab21648a477e91e0d3cb6dbdb1330262.zip op-kernel-dev-67e18cf9ab21648a477e91e0d3cb6dbdb1330262.tar.gz |
tcm_vhost: Multi-target support
In order to take advantages of Paolo's multi-queue virito-scsi, we need
multi-target support in tcm_vhost first. Otherwise all the requests go
to one queue and other queues are idle.
This patch makes:
1. All the targets under the wwpn is seen and can be used by guest.
2. No need to pass the tpgt number in struct vhost_scsi_target to
tcm_vhost.ko. Only wwpn is needed.
3. We can always pass max_target = 255 to guest now, since we abort the
request who's target id does not exist.
Changes in v2:
- Handle non-contiguous tpgt
Changes in v3:
- Simplfy lock in vhost_scsi_set_endpoint
- Return -EEXIST when does not match
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/vhost/tcm_vhost.h')
-rw-r--r-- | drivers/vhost/tcm_vhost.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/vhost/tcm_vhost.h b/drivers/vhost/tcm_vhost.h index 47ee80b..519a550 100644 --- a/drivers/vhost/tcm_vhost.h +++ b/drivers/vhost/tcm_vhost.h @@ -93,9 +93,11 @@ struct tcm_vhost_tport { * * 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 0 +#define VHOST_SCSI_ABI_VERSION 1 struct vhost_scsi_target { int abi_version; |