/* Executes a new request. A retried request never reach that function (send * and writes are discarded, and reads and atomics are retried elsewhere. */ static enum resp_states execute(struct rxe_qp *qp, struct rxe_pkt_info *pkt) { enum resp_states err; if (pkt->mask & RXE_SEND_MASK) { if (qp_type(qp) == IB_QPT_UD || qp_type(qp) == IB_QPT_SMI || qp_type(qp) == IB_QPT_GSI) { union rdma_network_hdr hdr; struct sk_buff *skb = PKT_TO_SKB(pkt); memset(&hdr, 0, sizeof(hdr)); if (skb->protocol == htons(ETH_P_IP)) memcpy(&hdr.roce4grh, ip_hdr(skb), sizeof(hdr.roce4grh)); else if (skb->protocol == htons(ETH_P_IPV6)) memcpy(&hdr.ibgrh, ipv6_hdr(skb), sizeof(hdr.ibgrh)); err = send_data_in(qp, &hdr, sizeof(hdr)); if (err) return err; } err = send_data_in(qp, payload_addr(pkt), payload_size(pkt)); if (err) return err; } else if (pkt->mask & RXE_WRITE_MASK) { err = write_data_in(qp, pkt); if (err) return err; } else if (pkt->mask & RXE_READ_MASK) { /* For RDMA Read we can increment the msn now. See C9-148. */ qp->resp.msn++; return RESPST_READ_REPLY; } else if (pkt->mask & RXE_ATOMIC_MASK) { err = process_atomic(qp, pkt); if (err) return err; } else /* Unreachable */ WARN_ON(1); /* We successfully processed this new request. */ qp->resp.msn++; /* next expected psn, read handles this separately */ qp->resp.psn = (pkt->psn + 1) & BTH_PSN_MASK; qp->resp.opcode = pkt->opcode; qp->resp.status = IB_WC_SUCCESS; if (pkt->mask & RXE_COMP_MASK) return RESPST_COMPLETE; else if (qp_type(qp) == IB_QPT_RC) return RESPST_ACKNOWLEDGE; else return RESPST_CLEANUP; }
/* Executes a new request. A retried request never reach that function (send * and writes are discarded, and reads and atomics are retried elsewhere. */ static enum resp_states execute(struct rxe_qp *qp, struct rxe_pkt_info *pkt) { enum resp_states err; if (pkt->mask & RXE_SEND_MASK) { if (qp_type(qp) == IB_QPT_UD || qp_type(qp) == IB_QPT_SMI || qp_type(qp) == IB_QPT_GSI) { union rdma_network_hdr hdr; build_rdma_network_hdr(&hdr, pkt); err = send_data_in(qp, &hdr, sizeof(hdr)); if (err) return err; } err = send_data_in(qp, payload_addr(pkt), payload_size(pkt)); if (err) return err; } else if (pkt->mask & RXE_WRITE_MASK) { err = write_data_in(qp, pkt); if (err) return err; } else if (pkt->mask & RXE_READ_MASK) { /* For RDMA Read we can increment the msn now. See C9-148. */ qp->resp.msn++; return RESPST_READ_REPLY; } else if (pkt->mask & RXE_ATOMIC_MASK) { err = process_atomic(qp, pkt); if (err) return err; } else { /* Unreachable */ WARN_ON_ONCE(1); } /* next expected psn, read handles this separately */ qp->resp.psn = (pkt->psn + 1) & BTH_PSN_MASK; qp->resp.ack_psn = qp->resp.psn; qp->resp.opcode = pkt->opcode; qp->resp.status = IB_WC_SUCCESS; if (pkt->mask & RXE_COMP_MASK) { /* We successfully processed this new request. */ qp->resp.msn++; return RESPST_COMPLETE; } else if (qp_type(qp) == IB_QPT_RC) return RESPST_ACKNOWLEDGE; else return RESPST_CLEANUP; }