From: Roopa Prabhu
Adds new option extern_learn to set NTF_EXT_LEARNED flag
on neigh entries.
Signed-off-by: Roopa Prabhu
---
ip/ipneigh.c| 7 ++-
man/man8/ip-neighbour.8 | 9 -
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/ip/ipneigh.c b/ip/ipneigh.c
index 165546e..042d01f 100644
--- a/ip/ipneigh.c
+++ b/ip/ipneigh.c
@@ -48,7 +48,7 @@ static void usage(void)
{
fprintf(stderr, "Usage: ip neigh { add | del | change | replace }\n"
"{ ADDR [ lladdr LLADDR ] [ nud STATE ]
| proxy ADDR } [ dev DEV ]\n");
- fprintf(stderr, " [ router ]\n\n");
+ fprintf(stderr, " [ router ] [
extern_learn ]\n\n");
fprintf(stderr, " ip neigh { show | flush } [ proxy ] [ to PREFIX
] [ dev DEV ] [ nud STATE ]\n");
fprintf(stderr, " [ vrf NAME ]\n\n");
fprintf(stderr, "STATE := { permanent | noarp | stale | reachable |
none |\n"
@@ -142,6 +142,8 @@ static int ipneigh_modify(int cmd, int flags, int argc,
char **argv)
req.ndm.ndm_flags |= NTF_PROXY;
} else if (strcmp(*argv, "router") == 0) {
req.ndm.ndm_flags |= NTF_ROUTER;
+ } else if (matches(*argv, "extern_learn") == 0) {
+ req.ndm.ndm_flags |= NTF_EXT_LEARNED;
} else if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
dev = *argv;
@@ -354,6 +356,9 @@ int print_neigh(const struct sockaddr_nl *who, struct
nlmsghdr *n, void *arg)
if (r->ndm_flags & NTF_PROXY)
print_null(PRINT_ANY, "proxy", " %s", "proxy");
+ if (r->ndm_flags & NTF_EXT_LEARNED)
+ print_null(PRINT_ANY, "extern_learn", " %s ", "extern_learn");
+
if (show_stats) {
if (tb[NDA_CACHEINFO])
print_cacheinfo(RTA_DATA(tb[NDA_CACHEINFO]));
diff --git a/man/man8/ip-neighbour.8 b/man/man8/ip-neighbour.8
index db286d1..4a672bb 100644
--- a/man/man8/ip-neighbour.8
+++ b/man/man8/ip-neighbour.8
@@ -24,7 +24,8 @@ ip-neighbour \- neighbour/arp tables management.
.IR ADDR " } [ "
.B dev
.IR DEV " ] [ "
-.BR router " ] "
+.BR router " ] [ "
+.BR extern_learn " ]"
.ti -8
.BR "ip neigh" " { " show " | " flush " } [ " proxy " ] [ " to
@@ -85,6 +86,12 @@ indicates whether we are proxying for this neigbour entry
indicates whether neigbour is a router
.TP
+.BI extern_learn
+this neigh entry was learned externally. This option can be used to
+indicate to the kernel that this is a controller learnt dynamic entry.
+Kernel will not gc such an entry.
+
+.TP
.BI lladdr " LLADDRESS"
the link layer address of the neighbour.
.I LLADDRESS
--
2.1.4
