src/sys/dev/vmware/vmci/vmci_queue_pair.c, branch release/12.3.0

vmci: fix panic due to freeing unallocated resources

2021-10-17T15:31:53Z

Summary: An error mapping PCI resources results in a panic due to unallocated resources being freed up. This change puts the appropriate checks in place to prevent the panic. PR: 252445 Reported by: Marek Zarychta Tested by: marcus MFC after: 1 week Sponsored by: VMware Test Plan: Along with user testing, also simulated error by inserting a ENXIO return in vmci_map_bars(). Reviewed by: marcus Subscribers: imp Differential Revision: https://reviews.freebsd.org/D32016 (cherry picked from commit 0f14bcbe384091c729464cb770372aeb79061070)

Update VMCI license based on comments from core, the FreeBSD Foundation,

2018-04-08T01:32:56Z

and VMware legal: - Add a dual BSD-2 Clause/GPLv2 LICENSE file in the VMCI directory - Remove the use of "All Rights Reserved" - Per best practice, remove copyright/license info from Makefile Reviewed by: imp, emaste, jhb, Vishnu Dasa Approved by: VMware legal via Mark Peek Differential Revision: https://reviews.freebsd.org/D14979

Rectify VMCI SPDX license

2018-03-27T06:33:00Z

Approved by: Vishnu Dasa

vmci(4): Fix GCC build and rationalize vmci_kernel_defs.h

2018-03-26T19:53:02Z

To fix the GCC build, remove multiple redundant declarations of vmci_send_datagram() (the copy in vmci.h as well as the extern definition in vmci_queue_pair.c were wholly redundant). Also to fix the GCC build, include a non-empty format string in the vmci(4) definition of ASSERT(). It seems harmless either way, but adding the stringified invariant is easier than masking the warning. The other vmci_kernel_defs.h changes are cosmetic and simply match macros to existing definitions. Reported by: GCC 6.4.0 Sponsored by: Dell EMC Isilon

Add VMCI (Virtual Machine Communication Interface) driver

2018-03-25T00:57:00Z

In a virtual machine, VMCI is exposed as a regular PCI device. The primary communication mechanisms supported are a point-to-point bidirectional transport based on a pair of memory-mapped queues, and asynchronous notifications in the form of datagrams and doorbells. These features are available to kernel level components such as vSockets through the VMCI kernel API. In addition to this, the VMCI kernel API provides support for receiving events related to the state of the VMCI communication channels, and the virtual machine itself. Submitted by: Vishnu Dasa Reviewed by: bcr, imp Obtained from: VMware Differential Revision: https://reviews.freebsd.org/D14289