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Commit 883a99c7 authored by Roland Dreier's avatar Roland Dreier
Browse files

[IB] uverbs: Add a mask of device methods allowed for userspace 



Give each device a uverbs_cmd_mask, so that a low-level driver can
control which methods may be called on behalf of userspace.

Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 56c202d6

drivers/infiniband/core/uverbs_main.c

+2 −1
Original line number Diff line number Diff line
@@ -514,7 +514,8 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf, 


	if (hdr.command < 0				||

	    hdr.command >= ARRAY_SIZE(uverbs_cmd_table) ||

	    !uverbs_cmd_table[hdr.command])

	    !uverbs_cmd_table[hdr.command]		||

	    !(file->device->ib_dev->uverbs_cmd_mask & (1ull << hdr.command)))

		return -EINVAL;



	if (!file->ucontext &&

drivers/infiniband/hw/mthca/mthca_provider.c

+20 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
 */



#include <rdma/ib_smi.h>

#include <rdma/ib_user_verbs.h>

#include <linux/mm.h>



#include "mthca_dev.h"
@@ -1077,6 +1078,25 @@ int mthca_register_device(struct mthca_dev *dev) 
	dev->ib_dev.owner                = THIS_MODULE;



	dev->ib_dev.uverbs_abi_ver	 = MTHCA_UVERBS_ABI_VERSION;

	dev->ib_dev.uverbs_cmd_mask	 =

		(1ull << IB_USER_VERBS_CMD_GET_CONTEXT)		|

		(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)	|

		(1ull << IB_USER_VERBS_CMD_QUERY_PORT)		|

		(1ull << IB_USER_VERBS_CMD_ALLOC_PD)		|

		(1ull << IB_USER_VERBS_CMD_DEALLOC_PD)		|

		(1ull << IB_USER_VERBS_CMD_REG_MR)		|

		(1ull << IB_USER_VERBS_CMD_DEREG_MR)		|

		(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL)	|

		(1ull << IB_USER_VERBS_CMD_CREATE_CQ)		|

		(1ull << IB_USER_VERBS_CMD_DESTROY_CQ)		|

		(1ull << IB_USER_VERBS_CMD_CREATE_QP)		|

		(1ull << IB_USER_VERBS_CMD_MODIFY_QP)		|

		(1ull << IB_USER_VERBS_CMD_DESTROY_QP)		|

		(1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)	|

		(1ull << IB_USER_VERBS_CMD_DETACH_MCAST)	|

		(1ull << IB_USER_VERBS_CMD_CREATE_SRQ)		|

		(1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)		|

		(1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);

	dev->ib_dev.node_type            = IB_NODE_CA;

	dev->ib_dev.phys_port_cnt        = dev->limits.num_ports;

	dev->ib_dev.dma_device           = &dev->pdev->dev;

include/rdma/ib_verbs.h

+1 −0
Original line number Diff line number Diff line
@@ -951,6 +951,7 @@ struct ib_device { 
		IB_DEV_UNREGISTERED

	}                            reg_state;



	u64			     uverbs_cmd_mask;

	int			     uverbs_abi_ver;



	u8                           node_type;