357 struct ipath_qp {  struct
359 	struct ipath_qp *next;		/* link list for QPN hash table */  argument
360 	struct ipath_qp *timer_next;	/* link list for ipath_ib_timer() */  argument
361 	struct ipath_qp *pio_next;	/* link for ipath_ib_piobufavail() */  argument
362 	struct list_head piowait;	/* link for wait PIO buf */
363 	struct list_head timerwait;	/* link for waiting for timeouts */
364 	struct ib_ah_attr remote_ah_attr;
365 	struct ipath_ib_header s_hdr;	/* next packet header to send */
366 	atomic_t refcount;
367 	wait_queue_head_t wait;
368 	wait_queue_head_t wait_dma;
369 	struct tasklet_struct s_task;
370 	struct ipath_mmap_info *ip;
371 	struct ipath_sge_state *s_cur_sge;
372 	struct ipath_verbs_txreq *s_tx;
373 	struct ipath_sge_state s_sge;	/* current send request data */
374 	struct ipath_ack_entry s_ack_queue[IPATH_MAX_RDMA_ATOMIC + 1];
375 	struct ipath_sge_state s_ack_rdma_sge;
376 	struct ipath_sge_state s_rdma_read_sge;
377 	struct ipath_sge_state r_sge;	/* current receive data */
378 	spinlock_t s_lock;
379 	atomic_t s_dma_busy;
380 	u16 s_pkt_delay;
381 	u16 s_hdrwords;		/* size of s_hdr in 32 bit words */
382 	u32 s_cur_size;		/* size of send packet in bytes */
383 	u32 s_len;		/* total length of s_sge */
384 	u32 s_rdma_read_len;	/* total length of s_rdma_read_sge */
385 	u32 s_next_psn;		/* PSN for next request */
386 	u32 s_last_psn;		/* last response PSN processed */
387 	u32 s_psn;		/* current packet sequence number */
388 	u32 s_ack_rdma_psn;	/* PSN for sending RDMA read responses */
389 	u32 s_ack_psn;		/* PSN for acking sends and RDMA writes */
390 	u32 s_rnr_timeout;	/* number of milliseconds for RNR timeout */
391 	u32 r_ack_psn;		/* PSN for next ACK or atomic ACK */
392 	u64 r_wr_id;		/* ID for current receive WQE */
393 	unsigned long r_aflags;
394 	u32 r_len;		/* total length of r_sge */
395 	u32 r_rcv_len;		/* receive data len processed */
396 	u32 r_psn;		/* expected rcv packet sequence number */
397 	u32 r_msn;		/* message sequence number */
398 	u8 state;		/* QP state */
399 	u8 s_state;		/* opcode of last packet sent */
400 	u8 s_ack_state;		/* opcode of packet to ACK */
401 	u8 s_nak_state;		/* non-zero if NAK is pending */
402 	u8 r_state;		/* opcode of last packet received */
403 	u8 r_nak_state;		/* non-zero if NAK is pending */
404 	u8 r_min_rnr_timer;	/* retry timeout value for RNR NAKs */
405 	u8 r_flags;
406 	u8 r_max_rd_atomic;	/* max number of RDMA read/atomic to receive */
407 	u8 r_head_ack_queue;	/* index into s_ack_queue[] */
408 	u8 qp_access_flags;
409 	u8 s_max_sge;		/* size of s_wq->sg_list */
410 	u8 s_retry_cnt;		/* number of times to retry */
411 	u8 s_rnr_retry_cnt;
412 	u8 s_retry;		/* requester retry counter */
413 	u8 s_rnr_retry;		/* requester RNR retry counter */
414 	u8 s_pkey_index;	/* PKEY index to use */
415 	u8 s_max_rd_atomic;	/* max number of RDMA read/atomic to send */
416 	u8 s_num_rd_atomic;	/* number of RDMA read/atomic pending */
417 	u8 s_tail_ack_queue;	/* index into s_ack_queue[] */
418 	u8 s_flags;
419 	u8 s_dmult;
420 	u8 s_draining;
421 	u8 timeout;		/* Timeout for this QP */
422 	enum ib_mtu path_mtu;
423 	u32 remote_qpn;
424 	u32 qkey;		/* QKEY for this QP (for UD or RD) */
425 	u32 s_size;		/* send work queue size */
426 	u32 s_head;		/* new entries added here */
427 	u32 s_tail;		/* next entry to process */
428 	u32 s_cur;		/* current work queue entry */
429 	u32 s_last;		/* last un-ACK'ed entry */
430 	u32 s_ssn;		/* SSN of tail entry */
431 	u32 s_lsn;		/* limit sequence number (credit) */
432 	struct ipath_swqe *s_wq;	/* send work queue */
433 	struct ipath_swqe *s_wqe;
434 	struct ipath_sge *r_ud_sg_list;
435 	struct ipath_rq r_rq;		/* receive work queue */
436 	struct ipath_sge r_sg_list[0];	/* verified SGEs */