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authorAsias He <asias@redhat.com>2013-04-10 15:06:16 +0800
committerNicholas Bellinger <nab@linux-iscsi.org>2013-04-11 01:48:42 -0700
commit055f648c49d948de9452b0f1758869bbbd0097b8 (patch)
tree683c374546db82f1413afeea5b1b4fe7cfff59b4 /drivers/vhost
parent637ab21e284f4e9188acc2746695f7f6452b4a22 (diff)
downloadlinux-055f648c49d948de9452b0f1758869bbbd0097b8.tar.gz
tcm_vhost: Send bad target to guest when cmd fails
Send bad target to guest in case: 1) we can not allocate the cmd 2) fail to submit the cmd Signed-off-by: Asias He <asias@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/vhost')
-rw-r--r--drivers/vhost/tcm_vhost.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index 1bb0fb4950d1..957a0b98a5d9 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -703,7 +703,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs,
if (IS_ERR(tv_cmd)) {
vq_err(vq, "vhost_scsi_allocate_cmd failed %ld\n",
PTR_ERR(tv_cmd));
- break;
+ goto err_cmd;
}
pr_debug("Allocated tv_cmd: %p exp_data_len: %d, data_direction"
": %d\n", tv_cmd, exp_data_len, data_direction);
@@ -729,7 +729,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs,
" exceeds SCSI_MAX_VARLEN_CDB_SIZE: %d\n",
scsi_command_size(tv_cmd->tvc_cdb),
TCM_VHOST_MAX_CDB_SIZE);
- goto err;
+ goto err_free;
}
tv_cmd->tvc_lun = ((v_req.lun[2] << 8) | v_req.lun[3]) & 0x3FFF;
@@ -742,7 +742,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs,
data_direction == DMA_TO_DEVICE);
if (unlikely(ret)) {
vq_err(vq, "Failed to map iov to sgl\n");
- goto err;
+ goto err_free;
}
}
@@ -765,8 +765,10 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs,
mutex_unlock(&vq->mutex);
return;
-err:
+err_free:
vhost_scsi_free_cmd(tv_cmd);
+err_cmd:
+ vhost_scsi_send_bad_target(vs, vq, head, out);
mutex_unlock(&vq->mutex);
}