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IB/srpt: Inline srpt_get_ch_state()
The callers of srpt_get_ch_state() can access ch->state safely without using locking. Hence inline this function. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Cc: Alex Estrin <alex.estrin@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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@ -109,17 +109,6 @@ enum dma_data_direction opposite_dma_dir(enum dma_data_direction dir)
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}
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}
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static enum rdma_ch_state srpt_get_ch_state(struct srpt_rdma_ch *ch)
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{
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unsigned long flags;
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enum rdma_ch_state state;
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spin_lock_irqsave(&ch->spinlock, flags);
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state = ch->state;
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spin_unlock_irqrestore(&ch->spinlock, flags);
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return state;
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}
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static enum rdma_ch_state
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srpt_set_ch_state(struct srpt_rdma_ch *ch, enum rdma_ch_state new_state)
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{
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@ -216,7 +205,7 @@ static void srpt_srq_event(struct ib_event *event, void *ctx)
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static void srpt_qp_event(struct ib_event *event, struct srpt_rdma_ch *ch)
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{
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pr_debug("QP event %d on cm_id=%p sess_name=%s state=%d\n",
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event->event, ch->cm_id, ch->sess_name, srpt_get_ch_state(ch));
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event->event, ch->cm_id, ch->sess_name, ch->state);
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switch (event->event) {
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case IB_EVENT_COMM_EST:
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@ -228,7 +217,7 @@ static void srpt_qp_event(struct ib_event *event, struct srpt_rdma_ch *ch)
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srpt_release_channel(ch);
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else
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pr_debug("%s: state %d - ignored LAST_WQE.\n",
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ch->sess_name, srpt_get_ch_state(ch));
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ch->sess_name, ch->state);
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break;
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default:
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pr_err("received unrecognized IB QP event %d\n", event->event);
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@ -1733,7 +1722,6 @@ static void srpt_handle_new_iu(struct srpt_rdma_ch *ch,
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struct srpt_send_ioctx *send_ioctx)
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{
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struct srp_cmd *srp_cmd;
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enum rdma_ch_state ch_state;
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BUG_ON(!ch);
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BUG_ON(!recv_ioctx);
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@ -1742,13 +1730,12 @@ static void srpt_handle_new_iu(struct srpt_rdma_ch *ch,
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recv_ioctx->ioctx.dma, srp_max_req_size,
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DMA_FROM_DEVICE);
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ch_state = srpt_get_ch_state(ch);
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if (unlikely(ch_state == CH_CONNECTING)) {
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if (unlikely(ch->state == CH_CONNECTING)) {
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list_add_tail(&recv_ioctx->wait_list, &ch->cmd_wait_list);
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goto out;
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}
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if (unlikely(ch_state != CH_LIVE))
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if (unlikely(ch->state != CH_LIVE))
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goto out;
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srp_cmd = recv_ioctx->ioctx.buf;
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@ -1857,7 +1844,7 @@ static void srpt_send_done(struct ib_cq *cq, struct ib_wc *wc)
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out:
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while (!list_empty(&ch->cmd_wait_list) &&
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srpt_get_ch_state(ch) == CH_LIVE &&
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ch->state == CH_LIVE &&
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(ioctx = srpt_get_send_ioctx(ch)) != NULL) {
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struct srpt_recv_ioctx *recv_ioctx;
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@ -2238,17 +2225,14 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
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&& param->port == ch->sport->port
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&& param->listen_id == ch->sport->sdev->cm_id
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&& ch->cm_id) {
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enum rdma_ch_state ch_state;
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ch_state = srpt_get_ch_state(ch);
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if (ch_state != CH_CONNECTING
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&& ch_state != CH_LIVE)
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if (ch->state != CH_CONNECTING
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&& ch->state != CH_LIVE)
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continue;
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/* found an existing channel */
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pr_debug("Found existing channel %s"
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" cm_id= %p state= %d\n",
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ch->sess_name, ch->cm_id, ch_state);
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ch->sess_name, ch->cm_id, ch->state);
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__srpt_close_ch(ch);
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@ -2499,7 +2483,7 @@ static void srpt_cm_dreq_recv(struct ib_cm_id *cm_id)
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ch = srpt_find_channel(cm_id->context, cm_id);
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BUG_ON(!ch);
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pr_debug("cm_id= %p ch->state= %d\n", cm_id, srpt_get_ch_state(ch));
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pr_debug("cm_id= %p ch->state= %d\n", cm_id, ch->state);
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spin_lock_irqsave(&ch->spinlock, flags);
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switch (ch->state) {
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@ -2691,7 +2675,6 @@ static int srpt_write_pending(struct se_cmd *se_cmd)
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struct srpt_rdma_ch *ch;
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struct srpt_send_ioctx *ioctx;
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enum srpt_command_state new_state;
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enum rdma_ch_state ch_state;
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int ret;
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ioctx = container_of(se_cmd, struct srpt_send_ioctx, cmd);
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@ -2702,10 +2685,9 @@ static int srpt_write_pending(struct se_cmd *se_cmd)
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ch = ioctx->ch;
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BUG_ON(!ch);
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ch_state = srpt_get_ch_state(ch);
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switch (ch_state) {
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switch (ch->state) {
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case CH_CONNECTING:
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WARN(true, "unexpected channel state %d\n", ch_state);
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WARN(true, "unexpected channel state %d\n", ch->state);
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ret = -EINVAL;
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goto out;
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case CH_LIVE:
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@ -3171,7 +3153,7 @@ static void srpt_close_session(struct se_session *se_sess)
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ch = se_sess->fabric_sess_ptr;
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WARN_ON(ch->sess != se_sess);
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pr_debug("ch %p state %d\n", ch, srpt_get_ch_state(ch));
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pr_debug("ch %p state %d\n", ch, ch->state);
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sdev = ch->sport->sdev;
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spin_lock_irq(&sdev->spinlock);
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