Commit 6b600b26 authored by Steffen Klassert's avatar Steffen Klassert Committed by David S. Miller

route: Use the device mtu as the default for blackhole routes

As it is, we return null as the default mtu of blackhole routes.
This may lead to a propagation of a bogus pmtu if the default_mtu
method of a blackhole route is invoked. So return dst->dev->mtu
as the default mtu instead.
Signed-off-by: default avatarSteffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent df07a94c
...@@ -2757,7 +2757,7 @@ static struct dst_entry *ipv4_blackhole_dst_check(struct dst_entry *dst, u32 coo ...@@ -2757,7 +2757,7 @@ static struct dst_entry *ipv4_blackhole_dst_check(struct dst_entry *dst, u32 coo
static unsigned int ipv4_blackhole_default_mtu(const struct dst_entry *dst) static unsigned int ipv4_blackhole_default_mtu(const struct dst_entry *dst)
{ {
return 0; return dst->dev->mtu;
} }
static void ipv4_rt_blackhole_update_pmtu(struct dst_entry *dst, u32 mtu) static void ipv4_rt_blackhole_update_pmtu(struct dst_entry *dst, u32 mtu)
......
...@@ -157,7 +157,7 @@ static struct dst_ops ip6_dst_ops_template = { ...@@ -157,7 +157,7 @@ static struct dst_ops ip6_dst_ops_template = {
static unsigned int ip6_blackhole_default_mtu(const struct dst_entry *dst) static unsigned int ip6_blackhole_default_mtu(const struct dst_entry *dst)
{ {
return 0; return dst->dev->mtu;
} }
static void ip6_rt_blackhole_update_pmtu(struct dst_entry *dst, u32 mtu) static void ip6_rt_blackhole_update_pmtu(struct dst_entry *dst, u32 mtu)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment