diff options
Diffstat (limited to 'drivers/infiniband/core/cm_msgs.h')
| -rw-r--r-- | drivers/infiniband/core/cm_msgs.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/infiniband/core/cm_msgs.h b/drivers/infiniband/core/cm_msgs.h new file mode 100644 index 000000000..8462de7ca --- /dev/null +++ b/drivers/infiniband/core/cm_msgs.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* + * Copyright (c) 2004, 2011 Intel Corporation. All rights reserved. + * Copyright (c) 2004 Topspin Corporation. All rights reserved. + * Copyright (c) 2004 Voltaire Corporation. All rights reserved. + * Copyright (c) 2019, Mellanox Technologies inc. All rights reserved. + */ +#ifndef CM_MSGS_H +#define CM_MSGS_H + +#include <rdma/ibta_vol1_c12.h> +#include <rdma/ib_mad.h> +#include <rdma/ib_cm.h> + +/* + * Parameters to routines below should be in network-byte order, and values + * are returned in network-byte order. + */ + +#define IB_CM_CLASS_VERSION 2 /* IB specification 1.2 */ + +static inline enum ib_qp_type cm_req_get_qp_type(struct cm_req_msg *req_msg) +{ + u8 transport_type = IBA_GET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg); + switch (transport_type) { + case 0: return IB_QPT_RC; + case 1: return IB_QPT_UC; + case 3: + switch (IBA_GET(CM_REQ_EXTENDED_TRANSPORT_TYPE, req_msg)) { + case 1: return IB_QPT_XRC_TGT; + default: return 0; + } + default: return 0; + } +} + +static inline void cm_req_set_qp_type(struct cm_req_msg *req_msg, + enum ib_qp_type qp_type) +{ + switch (qp_type) { + case IB_QPT_UC: + IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 1); + break; + case IB_QPT_XRC_INI: + IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 3); + IBA_SET(CM_REQ_EXTENDED_TRANSPORT_TYPE, req_msg, 1); + break; + default: + IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 0); + } +} + +/* Message REJected or MRAed */ +enum cm_msg_response { + CM_MSG_RESPONSE_REQ = 0x0, + CM_MSG_RESPONSE_REP = 0x1, + CM_MSG_RESPONSE_OTHER = 0x2 +}; + +static inline __be32 cm_rep_get_qpn(struct cm_rep_msg *rep_msg, enum ib_qp_type qp_type) +{ + return (qp_type == IB_QPT_XRC_INI) ? + cpu_to_be32(IBA_GET(CM_REP_LOCAL_EE_CONTEXT_NUMBER, + rep_msg)) : + cpu_to_be32(IBA_GET(CM_REP_LOCAL_QPN, rep_msg)); +} + +#endif /* CM_MSGS_H */ |