diff options
| author | Sebastian Sanchez <sebastian.sanchez@intel.com> | 2018-02-01 19:46:15 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-02-01 23:43:28 +0100 |
| commit | f150e2736f346a3171f002e660c3dfc653cc11cd (patch) | |
| tree | 72dd1e10ecd6f5566d3d03d7b5362c24ac203ed5 /drivers/infiniband/hw/qib | |
| parent | IB/hfi1: Remove dependence on qp->s_hdrwords (diff) | |
| download | linux-f150e2736f346a3171f002e660c3dfc653cc11cd.tar.xz linux-f150e2736f346a3171f002e660c3dfc653cc11cd.zip | |
IB/hfi1: Compute BTH only for RDMA_WRITE_LAST/SEND_LAST packet
In hfi1_rc_rcv(), BTH is computed for all packets received.
However, it's only used for packets received with opcodes
RDMA_WRITE_LAST and SEND_LAST, and it is a costly operation.
Compute BTH only in the RDMA_WRITE_LAST/SEND_LAST code path
and let the compiler handle endianness conversion for bitwise
operations.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/qib')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_rc.c | 3 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_uc.c | 3 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_ud.c | 3 |
3 files changed, 3 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/qib/qib_rc.c b/drivers/infiniband/hw/qib/qib_rc.c index e4a9ba1dd9ba..61d3bc6771f0 100644 --- a/drivers/infiniband/hw/qib/qib_rc.c +++ b/drivers/infiniband/hw/qib/qib_rc.c @@ -1916,8 +1916,7 @@ send_last: wc.port_num = 0; /* Signal completion event if the solicited bit is set. */ rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, - (ohdr->bth[0] & - cpu_to_be32(IB_BTH_SOLICITED)) != 0); + ib_bth_is_solicited(ohdr)); break; case OP(RDMA_WRITE_FIRST): diff --git a/drivers/infiniband/hw/qib/qib_uc.c b/drivers/infiniband/hw/qib/qib_uc.c index bddcc37ace44..d311db6487cf 100644 --- a/drivers/infiniband/hw/qib/qib_uc.c +++ b/drivers/infiniband/hw/qib/qib_uc.c @@ -403,8 +403,7 @@ last_imm: wc.port_num = 0; /* Signal completion event if the solicited bit is set. */ rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, - (ohdr->bth[0] & - cpu_to_be32(IB_BTH_SOLICITED)) != 0); + ib_bth_is_solicited(ohdr)); break; case OP(RDMA_WRITE_FIRST): diff --git a/drivers/infiniband/hw/qib/qib_ud.c b/drivers/infiniband/hw/qib/qib_ud.c index 15962ed193ce..59a4f0333803 100644 --- a/drivers/infiniband/hw/qib/qib_ud.c +++ b/drivers/infiniband/hw/qib/qib_ud.c @@ -581,8 +581,7 @@ void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr, wc.port_num = qp->port_num; /* Signal completion event if the solicited bit is set. */ rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, - (ohdr->bth[0] & - cpu_to_be32(IB_BTH_SOLICITED)) != 0); + ib_bth_is_solicited(ohdr)); return; drop: |