diff options
| author |   Mahesh Bandewar <maheshb@google.com> | 2019-07-01 14:38:57 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-07-01 19:34:46 -0700 |
| commit | 8d7017fd621d02ff0d47d19484350c2356828483 (patch) | |
| tree | 50a9602573c42c05fda4e01447f06483ccf7b68a /net | |
| parent | loopback: create blackhole net device similar to loopack. (diff) | |
| download | linux-dev-8d7017fd621d02ff0d47d19484350c2356828483.tar.xz linux-dev-8d7017fd621d02ff0d47d19484350c2356828483.zip | |
blackhole_netdev: use blackhole_netdev to invalidate dst entries
Use blackhole_netdev instead of 'lo' device with lower MTU when marking
dst "dead".
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Tested-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dst.c | 2 | ||||
| -rw-r--r-- | net/ipv4/route.c | 3 | ||||
| -rw-r--r-- | net/ipv6/route.c | 2 |
3 files changed, 3 insertions, 4 deletions
diff --git a/net/core/dst.c b/net/core/dst.c index e46366228eaf..1325316d9eab 100644 --- a/net/core/dst.c +++ b/net/core/dst.c @@ -160,7 +160,7 @@ void dst_dev_put(struct dst_entry *dst) dst->ops->ifdown(dst, dev, true); dst->input = dst_discard; dst->output = dst_discard_out; - dst->dev = dev_net(dst->dev)->loopback_dev; + dst->dev = blackhole_netdev; dev_hold(dst->dev); dev_put(dev); } diff --git a/net/ipv4/route.c b/net/ipv4/route.c index bbd55c7f6b2e..dc1f510a7c81 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1532,7 +1532,6 @@ static void ipv4_dst_destroy(struct dst_entry *dst) void rt_flush_dev(struct net_device *dev) { - struct net *net = dev_net(dev); struct rtable *rt; int cpu; @@ -1543,7 +1542,7 @@ void rt_flush_dev(struct net_device *dev) list_for_each_entry(rt, &ul->head, rt_uncached) { if (rt->dst.dev != dev) continue; - rt->dst.dev = net->loopback_dev; + rt->dst.dev = blackhole_netdev; dev_hold(rt->dst.dev); dev_put(dev); } diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 7556275b1cef..39361f57351a 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -176,7 +176,7 @@ static void rt6_uncached_list_flush_dev(struct net *net, struct net_device *dev) } if (rt_dev == dev) { - rt->dst.dev = loopback_dev; + rt->dst.dev = blackhole_netdev; dev_hold(rt->dst.dev); dev_put(rt_dev); } |