diff options
| author |   Wei Wang <weiwan@google.com> | 2017-06-17 10:42:26 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-06-17 22:53:59 -0400 |
| commit | 1dbe32525e26ec28d2cc17f65a90fc7b53f1f8d0 (patch) | |
| tree | c8de21d5e5503a6cf665c658b012c6d28c1345dc /net/ipv4/route.c | |
| parent | udp: call dst_hold_safe() in udp_sk_rx_set_dst() (diff) | |
| download | linux-dev-1dbe32525e26ec28d2cc17f65a90fc7b53f1f8d0.tar.xz linux-dev-1dbe32525e26ec28d2cc17f65a90fc7b53f1f8d0.zip | |
net: use loopback dev when generating blackhole route
Existing ipv4/6_blackhole_route() code generates a blackhole route
with dst->dev pointing to the passed in dst->dev.
It is not necessary to hold reference to the passed in dst->dev
because the packets going through this route are dropped anyway.
A loopback interface is good enough so that we don't need to worry about
releasing this dst->dev when this dev is going down.
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | net/ipv4/route.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 9b38cf18144e..0a843ef2b709 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2504,7 +2504,7 @@ struct dst_entry *ipv4_blackhole_route(struct net *net, struct dst_entry *dst_or new->input = dst_discard; new->output = dst_discard_out; - new->dev = ort->dst.dev; + new->dev = net->loopback_dev; if (new->dev) dev_hold(new->dev); |