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| author | David Ahern <dsahern@gmail.com> | 2019-04-17 03:31:43 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-04-18 09:19:07 +0300 |
| commit | b8fb1ab46169ac016a8552a6455bb0bfc401f8e2 (patch) | |
| tree | a7d8430a9044e9e3203915f401e68abfd6e30c31 /drivers/net/wireless/intel/iwlwifi/iwl-trans.h | |
| parent | cea29a70727e7885b3fdf0d266a57818652a89c1 (diff) | |
| download | linux-b8fb1ab46169ac016a8552a6455bb0bfc401f8e2.tar.xz | |
net ipv6: Prevent neighbor add if protocol is disabled on device
Disabling IPv6 on an interface removes existing entries but nothing prevents
new entries from being manually added. To that end, add a new neigh_table
operation, allow_add, that is called on RTM_NEWNEIGH to see if neighbor
entries are allowed on a given device. If IPv6 is disabled on the device,
allow_add returns false and passes a message back to the user via extack.
$ echo 1 > /proc/sys/net/ipv6/conf/eth1/disable_ipv6
$ ip -6 neigh add fe80::4c88:bff:fe21:2704 dev eth1 lladdr de:ad:be:ef:01:01
Error: IPv6 is disabled on this device.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/iwl-trans.h')
0 files changed, 0 insertions, 0 deletions