Grzegorz Jaszczyk d7db39550e sys_util: netlink: add functionality for family name query and mcast group id parsing ... In order to listen on a specific netlink generic multicast group for a given family (e.g. "acpi_mc_group" multicast group registered for "acpi_event" family), we first need to get its group id registered by the kernel. To achieve above, this commit implements two functionalities: 1) family name query (family_name_query), which prepares proper netlink message, which is next send to netlink generic controller to query kernel about a given family name. (e.g. it can be used to query about "acpi_event" family) 2) parse the netlink generic answer and get group id registered for a given generic netlink multicast group name (get_multicast_group_id) (e.g. it can be used to get multicast group id for "acpi_mc_group"). BUG=b:197247746, b:205072342 TEST=Use introduced functionality to query about "acpi_event" generic netlink family and get group id for "acpi_mc_group" group. Additionally test the same after hacking the kernel and registering two other multicast groups for acpi_event, so "acpi_mc_group" got a different group id. In both cases successfully listen on "acpi_mc_group". Change-Id: Ia7681fae2200ff5baebbad3742c9dd97ac59cae5 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3515924 Reviewed-by: Daniel Verkamp <dverkamp@chromium.org> Tested-by: kokoro <noreply+kokoro@google.com> Commit-Queue: Tomasz Nowicki <tnowicki@google.com>		2022-03-19 07:27:42 +00:00
..
src	sys_util: netlink: add functionality for family name query and mcast group id parsing	2022-03-19 07:27:42 +00:00
Cargo.toml	crosvm: migrate to Rust 2021 edition	2022-03-09 01:16:03 +00:00