IB/rdmavt: Add R and S flags for queue pairs

 *

 *

 */

 */

#include <rdma/ib_pack.h>

/*

 * Atomic bit definitions for r_aflags.

 */

#define RVT_R_WRID_VALID        0

#define RVT_R_REWIND_SGE        1

/*

 * Bit definitions for r_flags.

 */

#define RVT_R_REUSE_SGE 0x01

#define RVT_R_RDMAR_SEQ 0x02

#define RVT_R_RSP_NAK   0x04

#define RVT_R_RSP_SEND  0x08

#define RVT_R_COMM_EST  0x10

/*

 * Bit definitions for s_flags.

 *

 * RVT_S_SIGNAL_REQ_WR - set if QP send WRs contain completion signaled

 * RVT_S_BUSY - send tasklet is processing the QP

 * RVT_S_TIMER - the RC retry timer is active

 * RVT_S_ACK_PENDING - an ACK is waiting to be sent after RDMA read/atomics

 * RVT_S_WAIT_FENCE - waiting for all prior RDMA read or atomic SWQEs

 *                         before processing the next SWQE

 * RVT_S_WAIT_RDMAR - waiting for a RDMA read or atomic SWQE to complete

 *                         before processing the next SWQE

 * RVT_S_WAIT_RNR - waiting for RNR timeout

 * RVT_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE

 * RVT_S_WAIT_DMA - waiting for send DMA queue to drain before generating

 *                  next send completion entry not via send DMA

 * RVT_S_WAIT_PIO - waiting for a send buffer to be available

 * RVT_S_WAIT_TX - waiting for a struct verbs_txreq to be available

 * RVT_S_WAIT_DMA_DESC - waiting for DMA descriptors to be available

 * RVT_S_WAIT_KMEM - waiting for kernel memory to be available

 * RVT_S_WAIT_PSN - waiting for a packet to exit the send DMA queue

 * RVT_S_WAIT_ACK - waiting for an ACK packet before sending more requests

 * RVT_S_SEND_ONE - send one packet, request ACK, then wait for ACK

 * RVT_S_ECN - a BECN was queued to the send engine

 */

#define RVT_S_SIGNAL_REQ_WR	0x0001

#define RVT_S_BUSY		0x0002

#define RVT_S_TIMER		0x0004

#define RVT_S_RESP_PENDING	0x0008

#define RVT_S_ACK_PENDING	0x0010

#define RVT_S_WAIT_FENCE	0x0020

#define RVT_S_WAIT_RDMAR	0x0040

#define RVT_S_WAIT_RNR		0x0080

#define RVT_S_WAIT_SSN_CREDIT	0x0100

#define RVT_S_WAIT_DMA		0x0200

#define RVT_S_WAIT_PIO		0x0400

#define RVT_S_WAIT_TX		0x0800

#define RVT_S_WAIT_DMA_DESC	0x1000

#define RVT_S_WAIT_KMEM		0x2000

#define RVT_S_WAIT_PSN		0x4000

#define RVT_S_WAIT_ACK		0x8000

#define RVT_S_SEND_ONE		0x10000

#define RVT_S_UNLIMITED_CREDIT	0x20000

#define RVT_S_AHG_VALID		0x40000

#define RVT_S_AHG_CLEAR		0x80000

#define RVT_S_ECN		0x100000

/*

 * Wait flags that would prevent any packet type from being sent.

 */

#define RVT_S_ANY_WAIT_IO (RVT_S_WAIT_PIO | RVT_S_WAIT_TX | \

	RVT_S_WAIT_DMA_DESC | RVT_S_WAIT_KMEM)

/*

 * Wait flags that would prevent send work requests from making progress.

 */

#define RVT_S_ANY_WAIT_SEND (RVT_S_WAIT_FENCE | RVT_S_WAIT_RDMAR | \

	RVT_S_WAIT_RNR | RVT_S_WAIT_SSN_CREDIT | RVT_S_WAIT_DMA | \

	RVT_S_WAIT_PSN | RVT_S_WAIT_ACK)

#define RVT_S_ANY_WAIT (RVT_S_ANY_WAIT_IO | RVT_S_ANY_WAIT_SEND)

/* Number of bits to pay attention to in the opcode for checking qp type */

#define RVT_OPCODE_QP_MASK 0xE0

/*

/*

 * Send work request queue entry.

 * Send work request queue entry.

 * The size of the sg_list is determined when the QP is created and stored

 * The size of the sg_list is determined when the QP is created and stored