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authorSebastian Sanchez <sebastian.sanchez@intel.com>2018-02-01 10:46:23 -0800
committerJason Gunthorpe <jgg@mellanox.com>2018-02-01 15:43:28 -0700
commit6d6b8848c882b22e3170cc9f217101773e8bd8d2 (patch)
tree4e694d7e1ac69e73dcc01d11515189991fce8f76 /include/rdma/ib_hdrs.h
parentf150e2736f346a3171f002e660c3dfc653cc11cd (diff)
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.h5
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 */