110 struct channel_data {  struct
120 	char *(*setup_rx)(struct channel_data *channel, int size);  argument
122 	int (*rx_done)(struct channel_data *channel);  argument
124 	int (*tx_done)(struct channel_data *channel, int size);  argument
127 	struct mutex rlock;
128 	struct semaphore wsem;
129 	char *rxdata;
130 	int rxsize;
131 	wait_queue_head_t txwaitq, rxwaitq;
132 	int tx_status, rx_status;
135 	struct net_device *netdev;
159 	struct channel_data *rxchan;  argument