This patch adds a new field that is printed in the end of the line which
denotes the real entry state. Before this patch an entry's IIF could
disappear and it would look like an unresolved one (iif = unresolved):
(3.0.16.1, 225.11.16.1) Iif: unresolved
with no way to really distinguish it from an unresolved entry.
After the patch if the dumped entry has RTNH_F_UNRESOLVED set we get:
(3.0.16.1, 225.11.16.1) Iif: unresolved State: unresolved
for unresolved entries and:
(0.0.0.0, 225.11.11.11) Iif: eth4 Oifs: eth3 State: resolved
for resolved entries after the OIF list. Note that "State:" has ':' in
it so it cannot be mistaken for an interface name.
And for the example above, we'd get:
(0.0.0.0, 225.11.11.11) Iif: unresolved State: resolved
Also when dumping all routes via ip route show table all, it will show
up as:
multicast 225.11.16.1/32 from 3.0.16.1/32 table default proto 17 unresolved
Signed-off-by: Nikolay Aleksandrov <niko...@cumulusnetworks.com>
---
v2: sent latest version, with dumping the state in one line
ip/ipmroute.c | 2 ++
ip/iproute.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/ip/ipmroute.c b/ip/ipmroute.c
index 512afcd2086e..593ce3a1bd95 100644
--- a/ip/ipmroute.c
+++ b/ip/ipmroute.c
@@ -159,6 +159,8 @@ int print_mroute(const struct sockaddr_nl *who, struct
nlmsghdr *n, void *arg)
nh = RTNH_NEXT(nh);
}
}
+ fprintf(fp, " State: %s",
+ r->rtm_flags & RTNH_F_UNRESOLVED ? "unresolved" : "resolved");
if (show_stats && tb[RTA_MFC_STATS]) {
struct rta_mfc_stats *mfcs = RTA_DATA(tb[RTA_MFC_STATS]);
diff --git a/ip/iproute.c b/ip/iproute.c
index e433de8be189..c19578337f71 100644
--- a/ip/iproute.c
+++ b/ip/iproute.c
@@ -448,6 +448,8 @@ int print_route(const struct sockaddr_nl *who, struct
nlmsghdr *n, void *arg)
fprintf(fp, "notify ");
if (r->rtm_flags & RTNH_F_LINKDOWN)
fprintf(fp, "linkdown ");
+ if (r->rtm_flags & RTNH_F_UNRESOLVED)
+ fprintf(fp, "unresolved ");
if (tb[RTA_MARK]) {
unsigned int mark = *(unsigned int *)RTA_DATA(tb[RTA_MARK]);
--
2.1.4
