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/driver.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 '')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/driver.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c index 067b29f35f21..bb1a41b74dff 100644 --- a/drivers/infiniband/hw/hfi1/driver.c +++ b/drivers/infiniband/hw/hfi1/driver.c @@ -1440,6 +1440,8 @@ static int hfi1_setup_9B_packet(struct hfi1_packet *packet) packet->extra_byte = 0; packet->fecn = ib_bth_get_fecn(packet->ohdr); packet->becn = ib_bth_get_becn(packet->ohdr); + packet->pkey = ib_bth_get_pkey(packet->ohdr); + packet->migrated = ib_bth_is_migration(packet->ohdr); return 0; drop: @@ -1506,6 +1508,8 @@ static int hfi1_setup_bypass_packet(struct hfi1_packet *packet) packet->extra_byte = SIZE_OF_LT; packet->fecn = hfi1_16B_get_fecn(packet->hdr); packet->becn = hfi1_16B_get_becn(packet->hdr); + packet->pkey = hfi1_16B_get_pkey(packet->hdr); + packet->migrated = opa_bth_is_migration(packet->ohdr); if (hfi1_bypass_ingress_pkt_check(packet)) goto drop; |