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Revision 0dd8a25f355b4df2d41c08df1716340854c7d4c5 authored by Peng Li on 19 October 2021, 14:16:35 UTC, committed by David S. Miller on 20 October 2021, 10:38:11 UTC 
net: hns3: disable sriov before unload hclge layer
 
HNS3 driver includes hns3.ko, hnae3.ko and hclge.ko.
hns3.ko includes network stack and pci_driver, hclge.ko includes
HW device action, algo_ops and timer task, hnae3.ko includes some
register function.

When SRIOV is enable and hclge.ko is removed, HW device is unloaded
but VF still exists, PF will not reply VF mbx messages, and cause
errors.

This patch fix it by disable SRIOV before remove hclge.ko.

Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 1385cc8
Raw File
test_hmm_uapi.h 
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * This is a module to test the HMM (Heterogeneous Memory Management) API
 * of the kernel. It allows a userspace program to expose its entire address
 * space through the HMM test module device file.
 */
#ifndef _LIB_TEST_HMM_UAPI_H
#define _LIB_TEST_HMM_UAPI_H

#include <linux/types.h>
#include <linux/ioctl.h>

/*
 * Structure to pass to the HMM test driver to mimic a device accessing
 * system memory and ZONE_DEVICE private memory through device page tables.
 *
 * @addr: (in) user address the device will read/write
 * @ptr: (in) user address where device data is copied to/from
 * @npages: (in) number of pages to read/write
 * @cpages: (out) number of pages copied
 * @faults: (out) number of device page faults seen
 */
struct hmm_dmirror_cmd {
	__u64		addr;
	__u64		ptr;
	__u64		npages;
	__u64		cpages;
	__u64		faults;
};

/* Expose the address space of the calling process through hmm device file */
#define HMM_DMIRROR_READ		_IOWR('H', 0x00, struct hmm_dmirror_cmd)
#define HMM_DMIRROR_WRITE		_IOWR('H', 0x01, struct hmm_dmirror_cmd)
#define HMM_DMIRROR_MIGRATE		_IOWR('H', 0x02, struct hmm_dmirror_cmd)
#define HMM_DMIRROR_SNAPSHOT		_IOWR('H', 0x03, struct hmm_dmirror_cmd)
#define HMM_DMIRROR_EXCLUSIVE		_IOWR('H', 0x04, struct hmm_dmirror_cmd)
#define HMM_DMIRROR_CHECK_EXCLUSIVE	_IOWR('H', 0x05, struct hmm_dmirror_cmd)

/*
 * Values returned in hmm_dmirror_cmd.ptr for HMM_DMIRROR_SNAPSHOT.
 * HMM_DMIRROR_PROT_ERROR: no valid mirror PTE for this page
 * HMM_DMIRROR_PROT_NONE: unpopulated PTE or PTE with no access
 * HMM_DMIRROR_PROT_READ: read-only PTE
 * HMM_DMIRROR_PROT_WRITE: read/write PTE
 * HMM_DMIRROR_PROT_PMD: PMD sized page is fully mapped by same permissions
 * HMM_DMIRROR_PROT_PUD: PUD sized page is fully mapped by same permissions
 * HMM_DMIRROR_PROT_ZERO: special read-only zero page
 * HMM_DMIRROR_PROT_DEV_PRIVATE_LOCAL: Migrated device private page on the
 *					device the ioctl() is made
 * HMM_DMIRROR_PROT_DEV_PRIVATE_REMOTE: Migrated device private page on some
 *					other device
 */
enum {
	HMM_DMIRROR_PROT_ERROR			= 0xFF,
	HMM_DMIRROR_PROT_NONE			= 0x00,
	HMM_DMIRROR_PROT_READ			= 0x01,
	HMM_DMIRROR_PROT_WRITE			= 0x02,
	HMM_DMIRROR_PROT_PMD			= 0x04,
	HMM_DMIRROR_PROT_PUD			= 0x08,
	HMM_DMIRROR_PROT_ZERO			= 0x10,
	HMM_DMIRROR_PROT_DEV_PRIVATE_LOCAL	= 0x20,
	HMM_DMIRROR_PROT_DEV_PRIVATE_REMOTE	= 0x30,
};

#endif /* _LIB_TEST_HMM_UAPI_H */
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