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author | Doug Ledford <dledford@redhat.com> | 2019-02-06 01:59:43 +0300 |
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committer | Doug Ledford <dledford@redhat.com> | 2019-02-06 01:59:43 +0300 |
commit | a2f3bde88174e5c8edf7d6f1b3403a9214439d50 (patch) | |
tree | 2b516e3b90cf2ec0eb03b160a8b498486599b848 /include/rdma/tid_rdma_defs.h | |
parent | 2a6423961edf9db98d1e567992560e3bab65a9fc (diff) | |
parent | 3ce5daa2c1798a530db9a01cd35122e0958538ad (diff) | |
download | linux-a2f3bde88174e5c8edf7d6f1b3403a9214439d50.tar.xz |
Merge branch 'tid-read' into hfi1-tid
This is the series for adding TID RDMA read. Kaike put in a lot of
effort into making this more consumable for review so special thanks to
him.
Allocating resources and tracing are separated out followed by patches
which build up the read request. Then we have the patches to receive
incoming TID RDMA read requests and handle integration with the RC
protocol.
See the cover letter of the original posting for more of a detailed
overview of TID.
https://www.spinics.net/lists/linux-rdma/msg66611.html
* tid-read:
IB/hfi1: Add static trace for TID RDMA READ protocol
IB/hfi1: Enable TID RDMA READ protocol
IB/hfi1: Add interlock between a TID RDMA request and other requests
IB/hfi1: Integrate TID RDMA READ protocol into RC protocol
IB/hfi1: Increment the retry timeout value for TID RDMA READ request
IB/hfi1: Add functions for restarting TID RDMA READ request
IB/hfi1: Add TID RDMA handlers
IB/hfi1: Add functions to receive TID RDMA READ response
IB/hfi1: Add a function to build TID RDMA READ response
IB/hfi1: Add functions to receive TID RDMA READ request
IB/hfi1: Set PbcInsertHcrc for TID RDMA packets
IB/hfi1: Add functions to build TID RDMA READ request
IB/hfi1: Add static trace for flow and TID management functions
IB/hfi1: Add the counter n_tidwait
IB/hfi1: TID RDMA RcvArray programming and TID allocation
IB/hfi1: TID RDMA flow allocation
IB/hfi: Move RC functions into a header file
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma/tid_rdma_defs.h')
-rw-r--r-- | include/rdma/tid_rdma_defs.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/rdma/tid_rdma_defs.h b/include/rdma/tid_rdma_defs.h new file mode 100644 index 000000000000..1c431ea32b52 --- /dev/null +++ b/include/rdma/tid_rdma_defs.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ +/* + * Copyright(c) 2018 Intel Corporation. + * + */ + +#ifndef TID_RDMA_DEFS_H +#define TID_RDMA_DEFS_H + +#include <rdma/ib_pack.h> + +struct tid_rdma_read_req { + __le32 kdeth0; + __le32 kdeth1; + struct ib_reth reth; + __be32 tid_flow_psn; + __be32 tid_flow_qp; + __be32 verbs_qp; +}; + +struct tid_rdma_read_resp { + __le32 kdeth0; + __le32 kdeth1; + __be32 aeth; + __be32 reserved[4]; + __be32 verbs_psn; + __be32 verbs_qp; +}; + +/* + * TID RDMA Opcodes + */ +#define IB_OPCODE_TID_RDMA 0xe0 +enum { + IB_OPCODE_READ_REQ = 0x4, + IB_OPCODE_READ_RESP = 0x5, + + IB_OPCODE(TID_RDMA, READ_REQ), + IB_OPCODE(TID_RDMA, READ_RESP), +}; + +#define TID_OP(x) IB_OPCODE_TID_RDMA_##x + +/* + * Define TID RDMA specific WR opcodes. The ib_wr_opcode + * enum already provides some reserved values for use by + * low level drivers. Two of those are used but renamed + * to be more descriptive. + */ +#define IB_WR_TID_RDMA_READ IB_WR_RESERVED2 + +#endif /* TID_RDMA_DEFS_H */ |