forked from luck/tmp_suning_uos_patched
vhost-scsi: Rename struct tcm_vhost_cmd *tv_cmd to *cmd
This way, we use cmd for struct tcm_vhost_cmd and evt for struct tcm_vhost_cmd. Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Asias He
Michael S. Tsirkin
parent
9871831283
commit
3c63f66a0d
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@ -494,28 +494,28 @@ static int tcm_vhost_get_cmd_state(struct se_cmd *se_cmd)
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return 0;
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}
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static void vhost_scsi_complete_cmd(struct tcm_vhost_cmd *tv_cmd)
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static void vhost_scsi_complete_cmd(struct tcm_vhost_cmd *cmd)
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{
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struct vhost_scsi *vs = tv_cmd->tvc_vhost;
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struct vhost_scsi *vs = cmd->tvc_vhost;
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llist_add(&tv_cmd->tvc_completion_list, &vs->vs_completion_list);
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llist_add(&cmd->tvc_completion_list, &vs->vs_completion_list);
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vhost_work_queue(&vs->dev, &vs->vs_completion_work);
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}
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static int tcm_vhost_queue_data_in(struct se_cmd *se_cmd)
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{
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struct tcm_vhost_cmd *tv_cmd = container_of(se_cmd,
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struct tcm_vhost_cmd *cmd = container_of(se_cmd,
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struct tcm_vhost_cmd, tvc_se_cmd);
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vhost_scsi_complete_cmd(tv_cmd);
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vhost_scsi_complete_cmd(cmd);
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return 0;
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}
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static int tcm_vhost_queue_status(struct se_cmd *se_cmd)
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{
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struct tcm_vhost_cmd *tv_cmd = container_of(se_cmd,
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struct tcm_vhost_cmd *cmd = container_of(se_cmd,
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struct tcm_vhost_cmd, tvc_se_cmd);
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vhost_scsi_complete_cmd(tv_cmd);
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vhost_scsi_complete_cmd(cmd);
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return 0;
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}
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@ -556,24 +556,24 @@ tcm_vhost_allocate_evt(struct vhost_scsi *vs,
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return evt;
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}
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static void vhost_scsi_free_cmd(struct tcm_vhost_cmd *tv_cmd)
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static void vhost_scsi_free_cmd(struct tcm_vhost_cmd *cmd)
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{
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struct se_cmd *se_cmd = &tv_cmd->tvc_se_cmd;
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struct se_cmd *se_cmd = &cmd->tvc_se_cmd;
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/* TODO locking against target/backend threads? */
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transport_generic_free_cmd(se_cmd, 1);
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if (tv_cmd->tvc_sgl_count) {
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if (cmd->tvc_sgl_count) {
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u32 i;
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for (i = 0; i < tv_cmd->tvc_sgl_count; i++)
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put_page(sg_page(&tv_cmd->tvc_sgl[i]));
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for (i = 0; i < cmd->tvc_sgl_count; i++)
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put_page(sg_page(&cmd->tvc_sgl[i]));
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kfree(tv_cmd->tvc_sgl);
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kfree(cmd->tvc_sgl);
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}
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tcm_vhost_put_inflight(tv_cmd->inflight);
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tcm_vhost_put_inflight(cmd->inflight);
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kfree(tv_cmd);
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kfree(cmd);
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}
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static void
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@ -656,7 +656,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
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vs_completion_work);
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DECLARE_BITMAP(signal, VHOST_SCSI_MAX_VQ);
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struct virtio_scsi_cmd_resp v_rsp;
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struct tcm_vhost_cmd *tv_cmd;
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struct tcm_vhost_cmd *cmd;
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struct llist_node *llnode;
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struct se_cmd *se_cmd;
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int ret, vq;
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@ -664,32 +664,32 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
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bitmap_zero(signal, VHOST_SCSI_MAX_VQ);
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llnode = llist_del_all(&vs->vs_completion_list);
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while (llnode) {
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tv_cmd = llist_entry(llnode, struct tcm_vhost_cmd,
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cmd = llist_entry(llnode, struct tcm_vhost_cmd,
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tvc_completion_list);
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llnode = llist_next(llnode);
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se_cmd = &tv_cmd->tvc_se_cmd;
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se_cmd = &cmd->tvc_se_cmd;
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pr_debug("%s tv_cmd %p resid %u status %#02x\n", __func__,
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tv_cmd, se_cmd->residual_count, se_cmd->scsi_status);
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cmd, se_cmd->residual_count, se_cmd->scsi_status);
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memset(&v_rsp, 0, sizeof(v_rsp));
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v_rsp.resid = se_cmd->residual_count;
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/* TODO is status_qualifier field needed? */
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v_rsp.status = se_cmd->scsi_status;
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v_rsp.sense_len = se_cmd->scsi_sense_length;
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memcpy(v_rsp.sense, tv_cmd->tvc_sense_buf,
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memcpy(v_rsp.sense, cmd->tvc_sense_buf,
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v_rsp.sense_len);
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ret = copy_to_user(tv_cmd->tvc_resp, &v_rsp, sizeof(v_rsp));
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ret = copy_to_user(cmd->tvc_resp, &v_rsp, sizeof(v_rsp));
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if (likely(ret == 0)) {
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struct vhost_scsi_virtqueue *q;
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vhost_add_used(tv_cmd->tvc_vq, tv_cmd->tvc_vq_desc, 0);
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q = container_of(tv_cmd->tvc_vq, struct vhost_scsi_virtqueue, vq);
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vhost_add_used(cmd->tvc_vq, cmd->tvc_vq_desc, 0);
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q = container_of(cmd->tvc_vq, struct vhost_scsi_virtqueue, vq);
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vq = q - vs->vqs;
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__set_bit(vq, signal);
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} else
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pr_err("Faulted on virtio_scsi_cmd_resp\n");
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vhost_scsi_free_cmd(tv_cmd);
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vhost_scsi_free_cmd(cmd);
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}
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vq = -1;
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@ -705,7 +705,7 @@ vhost_scsi_allocate_cmd(struct vhost_virtqueue *vq,
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u32 exp_data_len,
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int data_direction)
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{
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struct tcm_vhost_cmd *tv_cmd;
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struct tcm_vhost_cmd *cmd;
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struct tcm_vhost_nexus *tv_nexus;
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tv_nexus = tpg->tpg_nexus;
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@ -714,19 +714,19 @@ vhost_scsi_allocate_cmd(struct vhost_virtqueue *vq,
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return ERR_PTR(-EIO);
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}
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tv_cmd = kzalloc(sizeof(struct tcm_vhost_cmd), GFP_ATOMIC);
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if (!tv_cmd) {
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cmd = kzalloc(sizeof(struct tcm_vhost_cmd), GFP_ATOMIC);
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if (!cmd) {
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pr_err("Unable to allocate struct tcm_vhost_cmd\n");
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return ERR_PTR(-ENOMEM);
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}
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tv_cmd->tvc_tag = v_req->tag;
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tv_cmd->tvc_task_attr = v_req->task_attr;
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tv_cmd->tvc_exp_data_len = exp_data_len;
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tv_cmd->tvc_data_direction = data_direction;
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tv_cmd->tvc_nexus = tv_nexus;
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tv_cmd->inflight = tcm_vhost_get_inflight(vq);
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cmd->tvc_tag = v_req->tag;
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cmd->tvc_task_attr = v_req->task_attr;
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cmd->tvc_exp_data_len = exp_data_len;
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cmd->tvc_data_direction = data_direction;
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cmd->tvc_nexus = tv_nexus;
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cmd->inflight = tcm_vhost_get_inflight(vq);
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return tv_cmd;
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return cmd;
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}
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/*
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@ -783,7 +783,7 @@ vhost_scsi_map_to_sgl(struct scatterlist *sgl,
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}
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static int
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vhost_scsi_map_iov_to_sgl(struct tcm_vhost_cmd *tv_cmd,
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vhost_scsi_map_iov_to_sgl(struct tcm_vhost_cmd *cmd,
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struct iovec *iov,
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unsigned int niov,
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int write)
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@ -802,25 +802,25 @@ vhost_scsi_map_iov_to_sgl(struct tcm_vhost_cmd *tv_cmd,
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/* TODO overflow checking */
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sg = kmalloc(sizeof(tv_cmd->tvc_sgl[0]) * sgl_count, GFP_ATOMIC);
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sg = kmalloc(sizeof(cmd->tvc_sgl[0]) * sgl_count, GFP_ATOMIC);
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if (!sg)
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return -ENOMEM;
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pr_debug("%s sg %p sgl_count %u is_err %d\n", __func__,
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sg, sgl_count, !sg);
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sg_init_table(sg, sgl_count);
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tv_cmd->tvc_sgl = sg;
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tv_cmd->tvc_sgl_count = sgl_count;
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cmd->tvc_sgl = sg;
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cmd->tvc_sgl_count = sgl_count;
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pr_debug("Mapping %u iovecs for %u pages\n", niov, sgl_count);
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for (i = 0; i < niov; i++) {
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ret = vhost_scsi_map_to_sgl(sg, sgl_count, &iov[i], write);
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if (ret < 0) {
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for (i = 0; i < tv_cmd->tvc_sgl_count; i++)
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put_page(sg_page(&tv_cmd->tvc_sgl[i]));
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kfree(tv_cmd->tvc_sgl);
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tv_cmd->tvc_sgl = NULL;
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tv_cmd->tvc_sgl_count = 0;
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for (i = 0; i < cmd->tvc_sgl_count; i++)
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put_page(sg_page(&cmd->tvc_sgl[i]));
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kfree(cmd->tvc_sgl);
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cmd->tvc_sgl = NULL;
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cmd->tvc_sgl_count = 0;
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return ret;
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}
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@ -832,15 +832,15 @@ vhost_scsi_map_iov_to_sgl(struct tcm_vhost_cmd *tv_cmd,
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static void tcm_vhost_submission_work(struct work_struct *work)
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{
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struct tcm_vhost_cmd *tv_cmd =
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struct tcm_vhost_cmd *cmd =
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container_of(work, struct tcm_vhost_cmd, work);
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struct tcm_vhost_nexus *tv_nexus;
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struct se_cmd *se_cmd = &tv_cmd->tvc_se_cmd;
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struct se_cmd *se_cmd = &cmd->tvc_se_cmd;
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struct scatterlist *sg_ptr, *sg_bidi_ptr = NULL;
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int rc, sg_no_bidi = 0;
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if (tv_cmd->tvc_sgl_count) {
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sg_ptr = tv_cmd->tvc_sgl;
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if (cmd->tvc_sgl_count) {
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sg_ptr = cmd->tvc_sgl;
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/* FIXME: Fix BIDI operation in tcm_vhost_submission_work() */
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#if 0
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if (se_cmd->se_cmd_flags & SCF_BIDI) {
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@ -851,13 +851,13 @@ static void tcm_vhost_submission_work(struct work_struct *work)
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} else {
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sg_ptr = NULL;
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}
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tv_nexus = tv_cmd->tvc_nexus;
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tv_nexus = cmd->tvc_nexus;
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rc = target_submit_cmd_map_sgls(se_cmd, tv_nexus->tvn_se_sess,
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tv_cmd->tvc_cdb, &tv_cmd->tvc_sense_buf[0],
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tv_cmd->tvc_lun, tv_cmd->tvc_exp_data_len,
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tv_cmd->tvc_task_attr, tv_cmd->tvc_data_direction,
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0, sg_ptr, tv_cmd->tvc_sgl_count,
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cmd->tvc_cdb, &cmd->tvc_sense_buf[0],
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cmd->tvc_lun, cmd->tvc_exp_data_len,
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cmd->tvc_task_attr, cmd->tvc_data_direction,
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0, sg_ptr, cmd->tvc_sgl_count,
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sg_bidi_ptr, sg_no_bidi);
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if (rc < 0) {
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transport_send_check_condition_and_sense(se_cmd,
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@ -891,7 +891,7 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq)
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struct tcm_vhost_tpg **vs_tpg;
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struct virtio_scsi_cmd_req v_req;
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struct tcm_vhost_tpg *tpg;
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struct tcm_vhost_cmd *tv_cmd;
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struct tcm_vhost_cmd *cmd;
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u32 exp_data_len, data_first, data_num, data_direction;
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unsigned out, in, i;
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int head, ret;
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@ -988,46 +988,46 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq)
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for (i = 0; i < data_num; i++)
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exp_data_len += vq->iov[data_first + i].iov_len;
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tv_cmd = vhost_scsi_allocate_cmd(vq, tpg, &v_req,
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cmd = vhost_scsi_allocate_cmd(vq, tpg, &v_req,
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exp_data_len, data_direction);
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if (IS_ERR(tv_cmd)) {
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if (IS_ERR(cmd)) {
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vq_err(vq, "vhost_scsi_allocate_cmd failed %ld\n",
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PTR_ERR(tv_cmd));
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PTR_ERR(cmd));
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goto err_cmd;
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}
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pr_debug("Allocated tv_cmd: %p exp_data_len: %d, data_direction"
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": %d\n", tv_cmd, exp_data_len, data_direction);
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": %d\n", cmd, exp_data_len, data_direction);
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tv_cmd->tvc_vhost = vs;
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tv_cmd->tvc_vq = vq;
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tv_cmd->tvc_resp = vq->iov[out].iov_base;
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cmd->tvc_vhost = vs;
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cmd->tvc_vq = vq;
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cmd->tvc_resp = vq->iov[out].iov_base;
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/*
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* Copy in the recieved CDB descriptor into tv_cmd->tvc_cdb
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* Copy in the recieved CDB descriptor into cmd->tvc_cdb
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* that will be used by tcm_vhost_new_cmd_map() and down into
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* target_setup_cmd_from_cdb()
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*/
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memcpy(tv_cmd->tvc_cdb, v_req.cdb, TCM_VHOST_MAX_CDB_SIZE);
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memcpy(cmd->tvc_cdb, v_req.cdb, TCM_VHOST_MAX_CDB_SIZE);
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/*
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* Check that the recieved CDB size does not exceeded our
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* hardcoded max for tcm_vhost
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*/
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/* TODO what if cdb was too small for varlen cdb header? */
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if (unlikely(scsi_command_size(tv_cmd->tvc_cdb) >
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if (unlikely(scsi_command_size(cmd->tvc_cdb) >
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TCM_VHOST_MAX_CDB_SIZE)) {
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vq_err(vq, "Received SCSI CDB with command_size: %d that"
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" exceeds SCSI_MAX_VARLEN_CDB_SIZE: %d\n",
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scsi_command_size(tv_cmd->tvc_cdb),
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scsi_command_size(cmd->tvc_cdb),
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TCM_VHOST_MAX_CDB_SIZE);
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goto err_free;
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}
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tv_cmd->tvc_lun = ((v_req.lun[2] << 8) | v_req.lun[3]) & 0x3FFF;
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cmd->tvc_lun = ((v_req.lun[2] << 8) | v_req.lun[3]) & 0x3FFF;
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pr_debug("vhost_scsi got command opcode: %#02x, lun: %d\n",
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tv_cmd->tvc_cdb[0], tv_cmd->tvc_lun);
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cmd->tvc_cdb[0], cmd->tvc_lun);
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if (data_direction != DMA_NONE) {
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ret = vhost_scsi_map_iov_to_sgl(tv_cmd,
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ret = vhost_scsi_map_iov_to_sgl(cmd,
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&vq->iov[data_first], data_num,
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data_direction == DMA_TO_DEVICE);
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if (unlikely(ret)) {
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@ -1041,22 +1041,22 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq)
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* complete the virtio-scsi request in TCM callback context via
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* tcm_vhost_queue_data_in() and tcm_vhost_queue_status()
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*/
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tv_cmd->tvc_vq_desc = head;
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cmd->tvc_vq_desc = head;
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/*
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* Dispatch tv_cmd descriptor for cmwq execution in process
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* context provided by tcm_vhost_workqueue. This also ensures
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* tv_cmd is executed on the same kworker CPU as this vhost
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* thread to gain positive L2 cache locality effects..
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*/
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INIT_WORK(&tv_cmd->work, tcm_vhost_submission_work);
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queue_work(tcm_vhost_workqueue, &tv_cmd->work);
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INIT_WORK(&cmd->work, tcm_vhost_submission_work);
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queue_work(tcm_vhost_workqueue, &cmd->work);
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}
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mutex_unlock(&vq->mutex);
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return;
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err_free:
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vhost_scsi_free_cmd(tv_cmd);
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vhost_scsi_free_cmd(cmd);
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err_cmd:
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vhost_scsi_send_bad_target(vs, vq, head, out);
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mutex_unlock(&vq->mutex);
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