/* 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;
}