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IB/mlx5: Remove support for IB_DEVICE_LOCAL_DMA_LKEY

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Commit 96249d70dd ("IB/core: Guarantee that a local_dma_lkey
is available") allows ULPs that make use of the local dma key to keep
working as before by allocating a DMA MR with local permissions and
converted these consumers to use the MR associated with the PD
rather then device->local_dma_lkey.

ConnectIB has some known issues with memory registration
using the local_dma_lkey (SEND, RDMA, RECV seems to work ok).

Thus don't expose support for it (remove device->local_dma_lkey
setting), and take advantage of the above commit such that no regression
is introduced to working systems.

The local_dma_lkey support will be restored in CX4 depending on FW
capability query.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg
2015-09-24 10:34:23 +03:00
committed by Doug Ledford
parent 3cffd93017
commit c6790aa9f4
4 changed files with 1 additions and 43 deletions
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11
include/linux/mlx5/device.h
View File

@@ -402,17 +402,6 @@ struct mlx5_cmd_teardown_hca_mbox_out {
u8 rsvd[8];
};
struct mlx5_cmd_query_special_contexts_mbox_in {
struct mlx5_inbox_hdr hdr;
u8 rsvd[8];
};
struct mlx5_cmd_query_special_contexts_mbox_out {
struct mlx5_outbox_hdr hdr;
__be32 dump_fill_mkey;
__be32 resd_lkey;
};
struct mlx5_cmd_layout {
u8 type;
u8 rsvd0[3];

1
include/linux/mlx5/driver.h
View File

@@ -845,7 +845,6 @@ void *mlx5_get_protocol_dev(struct mlx5_core_dev *mdev, int protocol);
int mlx5_register_interface(struct mlx5_interface *intf);
void mlx5_unregister_interface(struct mlx5_interface *intf);
int mlx5_core_query_vendor_id(struct mlx5_core_dev *mdev, u32 *vendor_id);
int mlx5_core_query_special_context(struct mlx5_core_dev *dev, u32 *rsvd_lkey);
struct mlx5_profile {
u64 mask;