add kabi reserved fields and excludes to networking
JIRA: https://issues.redhat.com/browse/RHEL-21356 Upstream Status: mostly RHEL-only patches
This series adds reserved fields to networking structs, and excludes some areas of networking from the kABI guarantee. These reserved fields are only needed during backports to z-stream.
Signed-off-by: Sabrina Dubroca sdubroca@redhat.com