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[RFC,net-next,6/9] net: Add IFA_RT_PRIORITY address attribute

Message ID 20180523225727.11386-7-dsahern@kernel.org
State RFC, archived
Delegated to: David Miller
Headers show
Series net: Add address attribute to control metric of prefix route | expand

Commit Message

David Ahern May 23, 2018, 10:57 p.m. UTC 
From: David Ahern <dsahern@gmail.com>

Currently, if two interfaces have addresses in the same connected route,
then the order of the prefix route entries is determined by the order in
which the addresses are assigned or the links brought up.

Add IFA_RT_PRIORITY to allow user to specify the metric of the prefix
route associated with an address giving interface managers better
control of the order of prefix routes.

Signed-off-by: David Ahern <dsahern@gmail.com>
---
 include/uapi/linux/if_addr.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/include/uapi/linux/if_addr.h b/include/uapi/linux/if_addr.h
index 2ef053d265de..ebaf5701c9db 100644
--- a/include/uapi/linux/if_addr.h
+++ b/include/uapi/linux/if_addr.h
@@ -33,6 +33,7 @@  enum {
 	IFA_CACHEINFO,
 	IFA_MULTICAST,
 	IFA_FLAGS,
+	IFA_RT_PRIORITY,  /* u32, priority/metric for prefix route */
 	__IFA_MAX,
 };