181 struct gsm_mux {  struct
182 	struct tty_struct *tty;		/* The tty our ldisc is bound to */
183 	spinlock_t lock;
184 	struct mutex mutex;
185 	unsigned int num;
186 	struct kref ref;
189 	wait_queue_head_t event;
194 	unsigned char *buf;
218 	void (*receive)(struct gsm_mux *gsm, u8 ch);  argument
219 	void (*error)(struct gsm_mux *gsm, u8 ch, u8 flag);  argument
221 	int (*output)(struct gsm_mux *mux, u8 *data, int len);  argument
224 	unsigned int mru;
225 	unsigned int mtu;
226 	int initiator;			/* Did we initiate connection */
227 	int dead;			/* Has the mux been shut down */
228 	struct gsm_dlci *dlci[NUM_DLCI];
229 	int constipated;		/* Asked by remote to shut up */
231 	spinlock_t tx_lock;
232 	unsigned int tx_bytes;		/* TX data outstanding */
235 	struct list_head tx_list;	/* Pending data packets */
238 	struct timer_list t2_timer;	/* Retransmit timer for commands */
239 	int cretries;			/* Command retry counter */
240 	struct gsm_control *pending_cmd;/* Our current pending command */
264 static struct gsm_mux *gsm_mux[MAX_MUX];	/* GSM muxes */  argument