C++ (Cpp) EP_RING_FULL Examples

Example #1

File: fjes_main.c Project: asmalldev/linux

static void fjes_tx_stall_task(struct work_struct *work)
{
	struct fjes_adapter *adapter = container_of(work,
			struct fjes_adapter, tx_stall_task);
	struct net_device *netdev = adapter->netdev;
	struct fjes_hw *hw = &adapter->hw;
	int all_queue_available, sendable;
	enum ep_partner_status pstatus;
	int max_epid, my_epid, epid;
	union ep_buffer_info *info;
	int i;

	if (((long)jiffies -
		dev_trans_start(netdev)) > FJES_TX_TX_STALL_TIMEOUT) {
		netif_wake_queue(netdev);
		return;
	}

	my_epid = hw->my_epid;
	max_epid = hw->max_epid;

	for (i = 0; i < 5; i++) {
		all_queue_available = 1;

		for (epid = 0; epid < max_epid; epid++) {
			if (my_epid == epid)
				continue;

			pstatus = fjes_hw_get_partner_ep_status(hw, epid);
			sendable = (pstatus == EP_PARTNER_SHARED);
			if (!sendable)
				continue;

			info = adapter->hw.ep_shm_info[epid].tx.info;

			if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE))
				return;

			if (EP_RING_FULL(info->v1i.head, info->v1i.tail,
					 info->v1i.count_max)) {
				all_queue_available = 0;
				break;
			}
		}

		if (all_queue_available) {
			netif_wake_queue(netdev);
			return;
		}
	}

	usleep_range(50, 100);

	queue_work(adapter->txrx_wq, &adapter->tx_stall_task);
}

Example #2

File: fjes_hw.c Project: Juan31/linux

int fjes_hw_epbuf_tx_pkt_send(struct epbuf_handler *epbh,
			      void *frame, size_t size)
{
	union ep_buffer_info *info = epbh->info;
	struct esmem_frame *ring_frame;

	if (EP_RING_FULL(info->v1i.head, info->v1i.tail, info->v1i.count_max))
		return -ENOBUFS;

	ring_frame = (struct esmem_frame *)&(epbh->ring[EP_RING_INDEX
					     (info->v1i.tail - 1,
					      info->v1i.count_max) *
					     info->v1i.frame_max]);

	ring_frame->frame_size = size;
	memcpy((void *)(ring_frame->frame_data), (void *)frame, size);

	EP_RING_INDEX_INC(epbh->info->v1i.tail, info->v1i.count_max);

	return 0;
}