25c2dd2f | 09-Feb-2023 |
Alexander V. Chernikov <melifaro@FreeBSD.org> |
netlink: return optional metadata with the operation result.
Some operations like interface creation may need to return metadata - in this case, interface name - back to the caller if the operation
netlink: return optional metadata with the operation result.
Some operations like interface creation may need to return metadata - in this case, interface name - back to the caller if the operation is successful. This change implements attaching an `NLMSGERR_ATTR_COOKIE` nla to the operation reply message via `nlmsg_report_cookie()`. Additionally, on successful interface creation, interface index and interface name are returned in the `IFLA_NEW_IFINDEX` and `IFLA_IFNAME TLVs, encapsulated in the `NLMSGERR_ATTR_COOKIE`.
Reviewed By: pauamma Differential Revision: https://reviews.freebsd.org/D38283 MFC after: 1 week
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