90 struct sb {  struct
91 	queue_t	*sb_rq;		/* our rq */  argument
92 	mblk_t	*sb_mp;		/* partial chunk */  argument
93 	mblk_t  *sb_head;	/* pre-allocated space for the next header */  argument
94 	mblk_t	*sb_tail;	/* first mblk of last message appended */  argument
95 	uint_t	sb_mlen;	/* sb_mp length */  argument
96 	uint_t	sb_mcount;	/* input msg count in sb_mp */  argument
97 	uint_t	sb_chunk;	/* max chunk size */  argument
98 	clock_t	sb_ticks;	/* timeout interval */  argument
99 	timeout_id_t sb_timeoutid; /* qtimeout() id */  argument
100 	uint_t	sb_drops;	/* cumulative # discarded msgs */  argument
101 	uint_t	sb_snap;	/* snapshot length */  argument
102 	uint_t	sb_flags;	/* flags field */  argument
103 	uint_t	sb_state;	/* state variable */  argument