From: David S. Miller Date: Tue, 29 May 2018 14:12:46 +0000 (-0400) Subject: Merge branch 'net-Add-address-attribute-to-control-metric-of-prefix-route' X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4d0312e00bce593e96b839b5113b0d3f7b1507ee;p=linux.git Merge branch 'net-Add-address-attribute-to-control-metric-of-prefix-route' David Ahern says: ==================== net: Add address attribute to control metric of prefix route For use cases such as VRR (Virtual Router Redundancy) interface managers want efficient control over the order of prefix routes when multiple interfaces have addresses with overlapping/duplicate subnets. Currently, if two interfaces have addresses in the same subnet, the order of the prefix route entries is determined by the order in which the addresses are assigned or the links brought up. Any actions like cycling an interface up and down changes that order. This set adds a new attribute for addresses to allow a user to specify the metric of the prefix route associated with an address giving interface managers better and more efficient control of the order of prefix routes. Patches 1-3 refactor IPv6 address add functions to pass an ifa6_config struct. The functions currently have a long list of arguments and adding the metric just makes it worse. Because of the overall diff size in moving the arguments to a struct, the change is done in stages to make it easier to review starting with the bottom function and pushing the struct up to callers in each successive patch. Patch 4 introduces the new attribute. Patches 5 and 6 add support for the new attribute to IPv4 and IPv6 addresses. Patch 7 adds a set of test cases. Patch 8 adds support to iproute2 Changes since RFC - collapsed patches 1 and 3 into patch 2 - simplified stack variables in fib_modify_prefix_metric in patch 5 ==================== Signed-off-by: David S. Miller --- 4d0312e00bce593e96b839b5113b0d3f7b1507ee