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| author | Sebastian Sanchez <sebastian.sanchez@intel.com> | 2018-02-01 10:46:15 -0800 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-02-01 15:43:28 -0700 |
| commit | f150e2736f346a3171f002e660c3dfc653cc11cd (patch) | |
| tree | 72dd1e10ecd6f5566d3d03d7b5362c24ac203ed5 /drivers/infiniband/hw/hfi1/ud.c | |
| parent | 9636258f103bac6853e280beecf9e85674736a6a (diff) | |
| download | lwn-f150e2736f346a3171f002e660c3dfc653cc11cd.tar.gz lwn-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/hfi1/ud.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/ud.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/hfi1/ud.c b/drivers/infiniband/hw/hfi1/ud.c index 6b5cd3a86be4..cff2fd8907f5 100644 --- a/drivers/infiniband/hw/hfi1/ud.c +++ b/drivers/infiniband/hw/hfi1/ud.c @@ -1045,8 +1045,7 @@ void hfi1_ud_rcv(struct hfi1_packet *packet) 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: |