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Commit 8524867b authored by Sagi Grimberg's avatar Sagi Grimberg Committed by Roland Dreier
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mlx5_core: Fix signature handover operation for interleaved buffers 



When the data and protection are interleaved in the memory domain, no
need to expand the mkey total length.

At the moment no Linux user works (iSER initiator & target) in
interleaved mode. This may change in the future as for SCSI
pass-through devices there is no real point in target performing
de-interleaving and re-interleaving of the protection data in the PT
stage. Regardless, signature verbs support this mode.

Signed-off-by: default avatarSagi Grimberg <sagig@mellanox.com>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent d6d211db

drivers/infiniband/hw/mlx5/qp.c

+4 −1
Original line number Diff line number Diff line
@@ -2275,7 +2275,10 @@ static int set_sig_umr_wr(struct ib_send_wr *wr, struct mlx5_ib_qp *qp, 


	/* length of the protected region, data + protection */

	region_len = wr->sg_list->length;

	if (wr->wr.sig_handover.prot)

	if (wr->wr.sig_handover.prot &&

	    (wr->wr.sig_handover.prot->lkey != wr->sg_list->lkey  ||

	     wr->wr.sig_handover.prot->addr != wr->sg_list->addr  ||

	     wr->wr.sig_handover.prot->length != wr->sg_list->length))

		region_len += wr->wr.sig_handover.prot->length;



	/**