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| author | Kaike Wan <kaike.wan@intel.com> | 2019-01-23 21:48:28 -0800 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2019-02-05 18:07:43 -0500 |
| commit | c098bbb00cd1986cbb58ed1712643f80ed00fcc3 (patch) | |
| tree | 3204232a72a64870d0f93f447ea1c73792f2fd39 /drivers/infiniband/hw/hfi1/tid_rdma.c | |
| parent | a2f3bde88174e5c8edf7d6f1b3403a9214439d50 (diff) | |
| download | lwn-c098bbb00cd1986cbb58ed1712643f80ed00fcc3.tar.gz lwn-c098bbb00cd1986cbb58ed1712643f80ed00fcc3.zip | |
IB/hfi1: Build TID RDMA WRITE request
This patch adds the functions to build TID RDMA WRITE request.
The work request opcode, packet opcode, and packet formats for TID
RDMA WRITE protocol are also defined in this patch.
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/tid_rdma.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/tid_rdma.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/tid_rdma.c b/drivers/infiniband/hw/hfi1/tid_rdma.c index 0ee79403acaf..089e301d9bcd 100644 --- a/drivers/infiniband/hw/hfi1/tid_rdma.c +++ b/drivers/infiniband/hw/hfi1/tid_rdma.c @@ -2975,3 +2975,41 @@ void setup_tid_rdma_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe) exit: rcu_read_unlock(); } + +/* TID RDMA WRITE functions */ + +u32 hfi1_build_tid_rdma_write_req(struct rvt_qp *qp, struct rvt_swqe *wqe, + struct ib_other_headers *ohdr, + u32 *bth1, u32 *bth2, u32 *len) +{ + struct hfi1_qp_priv *qpriv = qp->priv; + struct tid_rdma_request *req = wqe_to_tid_req(wqe); + struct tid_rdma_params *remote; + + rcu_read_lock(); + remote = rcu_dereference(qpriv->tid_rdma.remote); + /* + * Set the number of flow to be used based on negotiated + * parameters. + */ + req->n_flows = remote->max_write; + req->state = TID_REQUEST_ACTIVE; + + KDETH_RESET(ohdr->u.tid_rdma.w_req.kdeth0, KVER, 0x1); + KDETH_RESET(ohdr->u.tid_rdma.w_req.kdeth1, JKEY, remote->jkey); + ohdr->u.tid_rdma.w_req.reth.vaddr = + cpu_to_be64(wqe->rdma_wr.remote_addr + (wqe->length - *len)); + ohdr->u.tid_rdma.w_req.reth.rkey = + cpu_to_be32(wqe->rdma_wr.rkey); + ohdr->u.tid_rdma.w_req.reth.length = cpu_to_be32(*len); + ohdr->u.tid_rdma.w_req.verbs_qp = cpu_to_be32(qp->remote_qpn); + *bth1 &= ~RVT_QPN_MASK; + *bth1 |= remote->qp; + qp->s_state = TID_OP(WRITE_REQ); + qp->s_flags |= HFI1_S_WAIT_TID_RESP; + *bth2 |= IB_BTH_REQ_ACK; + *len = 0; + + rcu_read_unlock(); + return sizeof(ohdr->u.tid_rdma.w_req) / sizeof(u32); +} |