kernel.git/drivers/net/hyperv/netvsc.c, branch linux-5.16.y

Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM

2021-10-28T11:22:23Z

Mark vmbus ring buffer visible with set_memory_decrypted() when establish gpadl handle. Reviewed-by: Michael Kelley Signed-off-by: Tianyu Lan Link: https://lore.kernel.org/r/20211025122116.264793-5-ltykernel@gmail.com Signed-off-by: Wei Liu

scsi: storvsc: Use blk_mq_unique_tag() to generate requestIDs

2021-05-14T17:39:32Z

Use blk_mq_unique_tag() to generate requestIDs for StorVSC, avoiding all issues with allocating enough entries in the VMbus requestor. Suggested-by: Michael Kelley Signed-off-by: Andrea Parri (Microsoft) Reviewed-by: Michael Kelley Acked-by: Martin K. Petersen Link: https://lore.kernel.org/r/20210510210841.370472-1-parri.andrea@gmail.com Signed-off-by: Wei Liu

Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer

2021-05-14T17:37:46Z

Pointers to ring-buffer packets sent by Hyper-V are used within the guest VM. Hyper-V can send packets with erroneous values or modify packet fields after they are processed by the guest. To defend against these scenarios, return a copy of the incoming VMBus packet after validating its length and offset fields in hv_pkt_iter_first(). In this way, the packet can no longer be modified by the host. Signed-off-by: Andres Beltran Co-developed-by: Andrea Parri (Microsoft) Signed-off-by: Andrea Parri (Microsoft) Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/20210408161439.341988-1-parri.andrea@gmail.com Signed-off-by: Wei Liu

hv_netvsc: Add error handling while switching data path

2021-03-29T23:35:59Z

Add error handling in case of failure to send switching data path message to the host. Reported-by: Shachar Raindel Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller

hv_netvsc: Add a comment clarifying batching logic

2021-03-14T21:32:37Z

The batching logic in netvsc_send is non-trivial, due to a combination of the Linux API and the underlying hypervisor interface. Add a comment explaining why the code is written this way. Signed-off-by: Shachar Raindel Signed-off-by: Haiyang Zhang Reviewed-by: Dexuan Cui Signed-off-by: David S. Miller

Merge tag 'hyperv-next-signed-20210216' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

2021-02-21T21:24:39Z

Pull Hyper-V updates from Wei Liu: - VMBus hardening patches from Andrea Parri and Andres Beltran. - Patches to make Linux boot as the root partition on Microsoft Hypervisor from Wei Liu. - One patch to add a new sysfs interface to support hibernation on Hyper-V from Dexuan Cui. - Two miscellaneous clean-up patches from Colin and Gustavo. * tag 'hyperv-next-signed-20210216' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (31 commits) Revert "Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer" iommu/hyperv: setup an IO-APIC IRQ remapping domain for root partition x86/hyperv: implement an MSI domain for root partition asm-generic/hyperv: import data structures for mapping device interrupts asm-generic/hyperv: introduce hv_device_id and auxiliary structures asm-generic/hyperv: update hv_interrupt_entry asm-generic/hyperv: update hv_msi_entry x86/hyperv: implement and use hv_smp_prepare_cpus x86/hyperv: provide a bunch of helper functions ACPI / NUMA: add a stub function for node_to_pxm() x86/hyperv: handling hypercall page setup for root x86/hyperv: extract partition ID from Microsoft Hypervisor if necessary x86/hyperv: allocate output arg pages if required clocksource/hyperv: use MSR-based access if running as root Drivers: hv: vmbus: skip VMBus initialization if Linux is root x86/hyperv: detect if Linux is the root partition asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to HV_CPU_MANAGEMENT hv: hyperv.h: Replace one-element array with flexible-array in struct icmsg_negotiate hv_netvsc: Restrict configurations on isolated guests Drivers: hv: vmbus: Enforce 'VMBus version >= 5.2' on isolated guests ...

Revert "Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer"

2021-02-15T10:49:11Z

This reverts commit a8c3209998afb5c4941b49e35b513cea9050cb4a. It is reported that the said commit caused regression in netvsc. Reported-by: Andrea Parri (Microsoft) Signed-off-by: Wei Liu

hv_netvsc: Restrict configurations on isolated guests

2021-02-11T08:47:05Z

Restrict the NVSP protocol version(s) that will be negotiated with the host to be NVSP_PROTOCOL_VERSION_61 or greater if the guest is running isolated. Moreover, do not advertise the SR-IOV capability and ignore NVSP_MSG_4_TYPE_SEND_VF_ASSOCIATION messages in isolated guests, which are not supposed to support SR-IOV. This reduces the footprint of the code that will be exercised by Confidential VMs and hence the exposure to bugs and vulnerabilities. Signed-off-by: Andrea Parri (Microsoft) Acked-by: Jakub Kicinski Reviewed-by: Haiyang Zhang Cc: "David S. Miller" Cc: Jakub Kicinski Cc: netdev@vger.kernel.org Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/20210201144814.2701-5-parri.andrea@gmail.com Signed-off-by: Wei Liu

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2021-02-10T21:30:12Z

Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer

2021-02-05T09:55:42Z

Pointers to ring-buffer packets sent by Hyper-V are used within the guest VM. Hyper-V can send packets with erroneous values or modify packet fields after they are processed by the guest. To defend against these scenarios, return a copy of the incoming VMBus packet after validating its length and offset fields in hv_pkt_iter_first(). In this way, the packet can no longer be modified by the host. Signed-off-by: Andres Beltran Co-developed-by: Andrea Parri (Microsoft) Signed-off-by: Andrea Parri (Microsoft) Cc: "David S. Miller" Cc: Jakub Kicinski Cc: "James E.J. Bottomley" Cc: "Martin K. Petersen" Cc: netdev@vger.kernel.org Cc: linux-scsi@vger.kernel.org Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/20201208045311.10244-1-parri.andrea@gmail.com Signed-off-by: Wei Liu