1/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
2/*
3 * Copyright(c) 2018 Intel Corporation.
4 *
5 */
6
7#ifndef HFI1_RC_H
8#define HFI1_RC_H
9
10/* cut down ridiculously long IB macro names */
11#define OP(x) IB_OPCODE_RC_##x
12
13static inline void update_ack_queue(struct rvt_qp *qp, unsigned int n)
14{
15 unsigned int next;
16
17 next = n + 1;
18 if (next > rvt_size_atomic(rdi: ib_to_rvt(ibdev: qp->ibqp.device)))
19 next = 0;
20 qp->s_tail_ack_queue = next;
21 qp->s_acked_ack_queue = next;
22 qp->s_ack_state = OP(ACKNOWLEDGE);
23}
24
25static inline void rc_defered_ack(struct hfi1_ctxtdata *rcd,
26 struct rvt_qp *qp)
27{
28 if (list_empty(head: &qp->rspwait)) {
29 qp->r_flags |= RVT_R_RSP_NAK;
30 rvt_get_qp(qp);
31 list_add_tail(new: &qp->rspwait, head: &rcd->qp_wait_list);
32 }
33}
34
35static inline u32 restart_sge(struct rvt_sge_state *ss, struct rvt_swqe *wqe,
36 u32 psn, u32 pmtu)
37{
38 u32 len;
39
40 len = delta_psn(a: psn, b: wqe->psn) * pmtu;
41 return rvt_restart_sge(ss, wqe, len);
42}
43
44static inline void release_rdma_sge_mr(struct rvt_ack_entry *e)
45{
46 if (e->rdma_sge.mr) {
47 rvt_put_mr(mr: e->rdma_sge.mr);
48 e->rdma_sge.mr = NULL;
49 }
50}
51
52struct rvt_ack_entry *find_prev_entry(struct rvt_qp *qp, u32 psn, u8 *prev,
53 u8 *prev_ack, bool *scheduled);
54int do_rc_ack(struct rvt_qp *qp, u32 aeth, u32 psn, int opcode, u64 val,
55 struct hfi1_ctxtdata *rcd);
56struct rvt_swqe *do_rc_completion(struct rvt_qp *qp, struct rvt_swqe *wqe,
57 struct hfi1_ibport *ibp);
58
59#endif /* HFI1_RC_H */
60

source code of linux/drivers/infiniband/hw/hfi1/rc.h