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authorSebastian Sanchez <sebastian.sanchez@intel.com>2018-02-01 21:46:38 +0300
committerJason Gunthorpe <jgg@mellanox.com>2018-02-02 01:43:29 +0300
commitca85bb1ca9948899682fe7170636e465599ea8e7 (patch)
tree19720313686b1cdd9f0f5a8e43d75dfdf0e78cb0 /include/rdma/ib_hdrs.h
parentbdaf96f6500880401fe692cd0bf57afb596b135c (diff)
downloadlinux-ca85bb1ca9948899682fe7170636e465599ea8e7.tar.xz
IB/hfi1: Remove unnecessary fecn and becn fields
packet->fecn and packet->becn are calculated in the hot path and are never used. Remove these fields as they show to be costly in a profile. Also, remove initialization for becn and fecn in process_ecn() as they're unconditionally assigned in the function and ensure fecn and becn variables use a boolean type. 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.h10
1 files changed, 4 insertions, 6 deletions
diff --git a/include/rdma/ib_hdrs.h b/include/rdma/ib_hdrs.h
index 6ee985494acf..6e35416170a3 100644
--- a/include/rdma/ib_hdrs.h
+++ b/include/rdma/ib_hdrs.h
@@ -313,16 +313,14 @@ static inline u32 ib_bth_get_qpn(struct ib_other_headers *ohdr)
return (u32)((be32_to_cpu(ohdr->bth[1])) & IB_QPN_MASK);
}
-static inline u8 ib_bth_get_becn(struct ib_other_headers *ohdr)
+static inline bool ib_bth_get_becn(struct ib_other_headers *ohdr)
{
- return (u8)((be32_to_cpu(ohdr->bth[1]) >> IB_BECN_SHIFT) &
- IB_BECN_MASK);
+ return (ohdr->bth[1]) & cpu_to_be32(IB_BECN_SMASK);
}
-static inline u8 ib_bth_get_fecn(struct ib_other_headers *ohdr)
+static inline bool ib_bth_get_fecn(struct ib_other_headers *ohdr)
{
- return (u8)((be32_to_cpu(ohdr->bth[1]) >> IB_FECN_SHIFT) &
- IB_FECN_MASK);
+ return (ohdr->bth[1]) & cpu_to_be32(IB_FECN_SMASK);
}
static inline u8 ib_bth_get_tver(struct ib_other_headers *ohdr)