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/verbs.h | |
| parent | f150e2736f346a3171f002e660c3dfc653cc11cd (diff) | |
| download | linux-6d6b8848c882b22e3170cc9f217101773e8bd8d2.tar.gz linux-6d6b8848c882b22e3170cc9f217101773e8bd8d2.tar.bz2 linux-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/verbs.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/verbs.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h index c2aeb32bf482..ffc933ea146f 100644 --- a/drivers/infiniband/hw/hfi1/verbs.h +++ b/drivers/infiniband/hw/hfi1/verbs.h @@ -405,6 +405,11 @@ static inline void cacheless_memcpy(void *dst, void *src, size_t n) __copy_user_nocache(dst, (void __user *)src, n, 0); } +static inline bool opa_bth_is_migration(struct ib_other_headers *ohdr) +{ + return ohdr->bth[1] & cpu_to_be32(OPA_BTH_MIG_REQ); +} + extern const enum ib_wc_opcode ib_hfi1_wc_opcode[]; extern const u8 hdr_len_by_opcode[]; |