diff options
| author | Arun Ajith S <aajith@arista.com> | 2022-04-15 08:34:02 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-04-17 13:23:49 +0100 |
| commit | f9a2fb73318eb4dbf8cd84866b8b0dd012d8b116 (patch) | |
| tree | 1441aad939fad8f1112d3bfb24eec862e472f0ee /net/ipv6/addrconf.c | |
| parent | 0339d25a2807d913f5645b8d5e485640915f9702 (diff) | |
| download | linux-f9a2fb73318eb4dbf8cd84866b8b0dd012d8b116.tar.gz | |
net/ipv6: Introduce accept_unsolicited_na knob to implement router-side changes for RFC9131
Add a new neighbour cache entry in STALE state for routers on receiving
an unsolicited (gratuitous) neighbour advertisement with
target link-layer-address option specified.
This is similar to the arp_accept configuration for IPv4.
A new sysctl endpoint is created to turn on this behaviour:
/proc/sys/net/ipv6/conf/interface/accept_unsolicited_na.
Signed-off-by: Arun Ajith S <aajith@arista.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/addrconf.c')
| -rw-r--r-- | net/ipv6/addrconf.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 1afc4c024981a..6473dc84b71d8 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -5587,6 +5587,7 @@ static inline void ipv6_store_devconf(struct ipv6_devconf *cnf, array[DEVCONF_IOAM6_ID] = cnf->ioam6_id; array[DEVCONF_IOAM6_ID_WIDE] = cnf->ioam6_id_wide; array[DEVCONF_NDISC_EVICT_NOCARRIER] = cnf->ndisc_evict_nocarrier; + array[DEVCONF_ACCEPT_UNSOLICITED_NA] = cnf->accept_unsolicited_na; } static inline size_t inet6_ifla6_size(void) @@ -7038,6 +7039,15 @@ static const struct ctl_table addrconf_sysctl[] = { .extra2 = (void *)SYSCTL_ONE, }, { + .procname = "accept_unsolicited_na", + .data = &ipv6_devconf.accept_unsolicited_na, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec, + .extra1 = (void *)SYSCTL_ZERO, + .extra2 = (void *)SYSCTL_ONE, + }, + { /* sentinel */ } }; |