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| 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 /include/rdma/ib_hdrs.h | |
| 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 'include/rdma/ib_hdrs.h')
| -rw-r--r-- | include/rdma/ib_hdrs.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/rdma/ib_hdrs.h b/include/rdma/ib_hdrs.h index 6b1e8039971d..6ee985494acf 100644 --- a/include/rdma/ib_hdrs.h +++ b/include/rdma/ib_hdrs.h @@ -335,4 +335,9 @@ static inline bool ib_bth_is_solicited(struct ib_other_headers *ohdr) { return ohdr->bth[0] & cpu_to_be32(IB_BTH_SOLICITED); } + +static inline bool ib_bth_is_migration(struct ib_other_headers *ohdr) +{ + return ohdr->bth[0] & cpu_to_be32(IB_BTH_MIG_REQ); +} #endif /* IB_HDRS_H */ |