diff options
| author | Sebastian Sanchez <sebastian.sanchez@intel.com> | 2018-02-01 19:46:15 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-02-01 23:43:28 +0100 |
| commit | f150e2736f346a3171f002e660c3dfc653cc11cd (patch) | |
| tree | 72dd1e10ecd6f5566d3d03d7b5362c24ac203ed5 /include/rdma/ib_hdrs.h | |
| parent | IB/hfi1: Remove dependence on qp->s_hdrwords (diff) | |
| download | linux-f150e2736f346a3171f002e660c3dfc653cc11cd.tar.xz linux-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 'include/rdma/ib_hdrs.h')
| -rw-r--r-- | include/rdma/ib_hdrs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/rdma/ib_hdrs.h b/include/rdma/ib_hdrs.h index c124d515f7d5..6b1e8039971d 100644 --- a/include/rdma/ib_hdrs.h +++ b/include/rdma/ib_hdrs.h @@ -331,4 +331,8 @@ static inline u8 ib_bth_get_tver(struct ib_other_headers *ohdr) IB_BTH_TVER_MASK); } +static inline bool ib_bth_is_solicited(struct ib_other_headers *ohdr) +{ + return ohdr->bth[0] & cpu_to_be32(IB_BTH_SOLICITED); +} #endif /* IB_HDRS_H */ |