diff options
| author |   Sebastian Sanchez <sebastian.sanchez@intel.com> | 2018-02-01 10:46:23 -0800 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2018-02-01 15:43:28 -0700 |
| commit | 6d6b8848c882b22e3170cc9f217101773e8bd8d2 (patch) | |
| tree | 4e694d7e1ac69e73dcc01d11515189991fce8f76 /drivers/infiniband/hw/hfi1/ruc.c | |
| parent | IB/hfi1: Compute BTH only for RDMA_WRITE_LAST/SEND_LAST packet (diff) | |
| download | linux-dev-6d6b8848c882b22e3170cc9f217101773e8bd8d2.tar.xz linux-dev-6d6b8848c882b22e3170cc9f217101773e8bd8d2.zip | |
IB/hfi1: Optimize packet type comparison using 9B and bypass code paths
The packet type comparison used to find out if a packet is a bypass
packet in the hot path is an expensive operation as seen in a profile.
Determine packet's pkey and migration bit through the bypass and 9B
code paths instead.
Reviewed-by: Don Hiatt <don.hiatt@intel.com>
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/ruc.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/ruc.c | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/drivers/infiniband/hw/hfi1/ruc.c b/drivers/infiniband/hw/hfi1/ruc.c index 0cced9a4a345..6434207a9506 100644 --- a/drivers/infiniband/hw/hfi1/ruc.c +++ b/drivers/infiniband/hw/hfi1/ruc.c @@ -225,19 +225,8 @@ int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet) u32 dlid = packet->dlid; u32 slid = packet->slid; u32 sl = packet->sl; - int migrated; - u32 bth0, bth1; - u16 pkey; - - bth0 = be32_to_cpu(packet->ohdr->bth[0]); - bth1 = be32_to_cpu(packet->ohdr->bth[1]); - if (packet->etype == RHF_RCV_TYPE_BYPASS) { - pkey = hfi1_16B_get_pkey(packet->hdr); - migrated = bth1 & OPA_BTH_MIG_REQ; - } else { - pkey = ib_bth_get_pkey(packet->ohdr); - migrated = bth0 & IB_BTH_MIG_REQ; - } + bool migrated = packet->migrated; + u16 pkey = packet->pkey; if (qp->s_mig_state == IB_MIG_ARMED && migrated) { if (!packet->grh) { |