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| author | Petr Machata <petrm@mellanox.com> | 2018-08-01 01:36:03 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-08-01 19:52:30 +0300 |
| commit | 432e05d328921c68c35bfdeff7d7b7400b8e3d1a (patch) | |
| tree | 4c6becb6e6fa05882ba97f5ed121ad7d29eb6b33 /include/net | |
| parent | 83ba4645152d1177c161750e1064e3a8e7cee19b (diff) | |
| download | linux-432e05d328921c68c35bfdeff7d7b7400b8e3d1a.tar.xz | |
net: ipv4: Control SKB reprioritization after forwarding
After IPv4 packets are forwarded, the priority of the corresponding SKB
is updated according to the TOS field of IPv4 header. This overrides any
prioritization done earlier by e.g. an skbedit action or ingress-qos-map
defined at a vlan device.
Such overriding may not always be desirable. Even if the packet ends up
being routed, which implies this is an L3 network node, an administrator
may wish to preserve whatever prioritization was done earlier on in the
pipeline.
Therefore introduce a sysctl that controls this behavior. Keep the
default value at 1 to maintain backward-compatible behavior.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/netns/ipv4.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 661348f23ea5..e47503b4e4d1 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -98,6 +98,7 @@ struct netns_ipv4 { int sysctl_ip_default_ttl; int sysctl_ip_no_pmtu_disc; int sysctl_ip_fwd_use_pmtu; + int sysctl_ip_fwd_update_priority; int sysctl_ip_nonlocal_bind; /* Shall we try to damage output packets if routing dev changes? */ int sysctl_ip_dynaddr; |