diff options
| author | Andy Gospodarek <gospo@cumulusnetworks.com> | 2015-06-23 17:45:36 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-06-24 09:15:54 (GMT) |
| commit | 8a3d03166f19329b46c6f9e900f93a89f446077b (patch) | |
| tree | 22daa91207335df8bb3f2081c85d772b037d962a /include/uapi | |
| parent | 5c8079d049c8452aeacec96a260200d468afc87d (diff) | |
| download | linux-8a3d03166f19329b46c6f9e900f93a89f446077b.tar.xz | |
net: track link-status of ipv4 nexthops
Add a fib flag called RTNH_F_LINKDOWN to any ipv4 nexthops that are
reachable via an interface where carrier is off. No action is taken,
but additional flags are passed to userspace to indicate carrier status.
This also includes a cleanup to fib_disable_ip to more clearly indicate
what event made the function call to replace the more cryptic force
option previously used.
v2: Split out kernel functionality into 2 patches, this patch simply
sets and clears new nexthop flag RTNH_F_LINKDOWN.
v3: Cleanups suggested by Alex as well as a bug noticed in
fib_sync_down_dev and fib_sync_up when multipath was not enabled.
v5: Whitespace and variable declaration fixups suggested by Dave.
v6: Style fixups noticed by Dave; ran checkpatch to be sure I got them
all.
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: Dinesh Dutt <ddutt@cumulusnetworks.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/rtnetlink.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h index 17fb02f..fdd8f07 100644 --- a/include/uapi/linux/rtnetlink.h +++ b/include/uapi/linux/rtnetlink.h @@ -338,6 +338,9 @@ struct rtnexthop { #define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */ #define RTNH_F_ONLINK 4 /* Gateway is forced on link */ #define RTNH_F_OFFLOAD 8 /* offloaded route */ +#define RTNH_F_LINKDOWN 16 /* carrier-down on nexthop */ + +#define RTNH_COMPARE_MASK (RTNH_F_DEAD | RTNH_F_LINKDOWN) /* Macros to handle hexthops */ |