Commit 3cafad43 authored by Don Hiatt's avatar Don Hiatt Committed by Jason Gunthorpe
Browse files

IB/hfi1: Mask the path bits with the LMC for 16B RC Acks 



16B packets require that the path bits are masked with the LMC.
This mask is done correctly in all 16B header creation but was
left out for the RC Acknowledge.

Reviewed-by: default avatarIra Weiny <ira.weiny@intel.com>
Signed-off-by: default avatarDon Hiatt <don.hiatt@intel.com>
Signed-off-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent ae64f9bd

drivers/infiniband/hw/hfi1/rc.c

+4 −4
Original line number Diff line number Diff line
@@ -843,11 +843,11 @@ static inline void hfi1_make_rc_ack_16B(struct rvt_qp *qp, 
	/* Convert dwords to flits */

	len = (*hwords + *nwords) >> 1;



	hfi1_make_16b_hdr(hdr,

			  ppd->lid | rdma_ah_get_path_bits(&qp->remote_ah_attr),

	hfi1_make_16b_hdr(hdr, ppd->lid |

			  (rdma_ah_get_path_bits(&qp->remote_ah_attr) &

			  ((1 << ppd->lmc) - 1)),

			  opa_get_lid(rdma_ah_get_dlid(&qp->remote_ah_attr),

				      16B),

			  len, pkey, becn, 0, l4, sc5);

				      16B), len, pkey, becn, 0, l4, sc5);



	bth0 = pkey | (OP(ACKNOWLEDGE) << 24);

	bth0 |= extra_bytes << 20;

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