195 struct gsm_mux {  struct
196 	struct tty_struct *tty;		/* The tty our ldisc is bound to */
197 	spinlock_t lock;
198 	unsigned int num;
199 	struct kref ref;
202 	wait_queue_head_t event;
207 	unsigned char *buf;
231 	void (*receive)(struct gsm_mux *gsm, u8 ch);  argument
232 	void (*error)(struct gsm_mux *gsm, u8 ch, u8 flag);  argument
234 	int (*output)(struct gsm_mux *mux, u8 *data, int len);  argument
237 	unsigned int mru;
238 	unsigned int mtu;
239 	int initiator;			/* Did we initiate connection */
240 	int dead;			/* Has the mux been shut down */
241 	struct gsm_dlci *dlci[NUM_DLCI];
242 	int constipated;		/* Asked by remote to shut up */
244 	spinlock_t tx_lock;
245 	unsigned int tx_bytes;		/* TX data outstanding */
248 	struct gsm_msg *tx_head;	/* Pending data packets */
249 	struct gsm_msg *tx_tail;
252 	struct timer_list t2_timer;	/* Retransmit timer for commands */
253 	int cretries;			/* Command retry counter */
254 	struct gsm_control *pending_cmd;/* Our current pending command */
278 static struct gsm_mux *gsm_mux[MAX_MUX];	/* GSM muxes */  argument