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Commit c9257433 authored by Vladimir Sokolovsky's avatar Vladimir Sokolovsky Committed by Roland Dreier
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mlx4_core: Set RAE and init mtt_sz field in FRMR MPT entries 



Set the RAE (remote access enable) bit and correctly initialize the
MTT size in MPT entries being set up for fast register memory
regions.  Otherwise the callers can't enable remote access and in fact
can't fast register at all (since the HCA will think no MTT entries
are allocated).

Signed-off-by: default avatarVladimir Sokolovsky <vlad@mellanox.co.il>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 1941246d

drivers/net/mlx4/mr.c

+6 −2
Original line number Diff line number Diff line
@@ -67,7 +67,8 @@ struct mlx4_mpt_entry { 
#define MLX4_MPT_FLAG_PHYSICAL	    (1 <<  9)

#define MLX4_MPT_FLAG_REGION	    (1 <<  8)



#define MLX4_MPT_PD_FLAG_FAST_REG   (1 << 26)

#define MLX4_MPT_PD_FLAG_FAST_REG   (1 << 27)

#define MLX4_MPT_PD_FLAG_RAE	    (1 << 28)

#define MLX4_MPT_PD_FLAG_EN_INV	    (3 << 24)



#define MLX4_MTT_FLAG_PRESENT		1
@@ -348,7 +349,10 @@ int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr) 
	if (mr->mtt.order >= 0 && mr->mtt.page_shift == 0) {

		/* fast register MR in free state */

		mpt_entry->flags    |= cpu_to_be32(MLX4_MPT_FLAG_FREE);

		mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_FAST_REG);

		mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_FAST_REG |

						   MLX4_MPT_PD_FLAG_RAE);

		mpt_entry->mtt_sz    = cpu_to_be32((1 << mr->mtt.order) *

						   MLX4_MTT_ENTRY_PER_SEG);

	} else {

		mpt_entry->flags    |= cpu_to_be32(MLX4_MPT_FLAG_SW_OWNS);

	}