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 13 static 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(ib_to_rvt(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 25 static inline void rc_defered_ack(struct hfi1_ctxtdata *rcd, 26 struct rvt_qp *qp) 27 { 28 if (list_empty(&qp->rspwait)) { 29 qp->r_flags |= RVT_R_RSP_NAK; 30 rvt_get_qp(qp); 31 list_add_tail(&qp->rspwait, &rcd->qp_wait_list); 32 } 33 } 34 35 static 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(psn, wqe->psn) * pmtu; 41 return rvt_restart_sge(ss, wqe, len); 42 } 43 44 struct rvt_ack_entry *find_prev_entry(struct rvt_qp *qp, u32 psn, u8 *prev, 45 u8 *prev_ack, bool *scheduled); 46 int do_rc_ack(struct rvt_qp *qp, u32 aeth, u32 psn, int opcode, u64 val, 47 struct hfi1_ctxtdata *rcd); 48 struct rvt_swqe *do_rc_completion(struct rvt_qp *qp, struct rvt_swqe *wqe, 49 struct hfi1_ibport *ibp); 50 51 #endif /* HFI1_RC_H */ 52