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| author |   Joe Stringer <joestringer@nicira.com> | 2015-08-26 11:31:53 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-08-27 11:40:43 -0700 |
| commit | cae3a2627520c3795b54533c5328b77af3405dbe (patch) | |
| tree | 11d4fe2287105c7009e4c1c27d5d722658d2374b /include | |
| parent | openvswitch: Allow matching on conntrack label (diff) | |
| download | linux-dev-cae3a2627520c3795b54533c5328b77af3405dbe.tar.xz linux-dev-cae3a2627520c3795b54533c5328b77af3405dbe.zip | |
openvswitch: Allow attaching helpers to ct action
Add support for using conntrack helpers to assist protocol detection.
The new OVS_CT_ATTR_HELPER attribute of the CT action specifies a helper
to be used for this connection. If no helper is specified, then helpers
will be automatically applied as per the sysctl configuration of
net.netfilter.nf_conntrack_helper.
The helper may be specified as part of the conntrack action, eg:
ct(helper=ftp). Initial packets for related connections should be
committed to allow later packets for the flow to be considered
established.
Example ovs-ofctl flows allowing FTP connections from ports 1->2:
in_port=1,tcp,action=ct(helper=ftp,commit),2
in_port=2,tcp,ct_state=-trk,action=ct(recirc)
in_port=2,tcp,ct_state=+trk-new+est,action=1
in_port=2,tcp,ct_state=+trk+rel,action=1
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/openvswitch.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h index 9d52058a9330..32e07d8cbaf4 100644 --- a/include/uapi/linux/openvswitch.h +++ b/include/uapi/linux/openvswitch.h @@ -626,6 +626,7 @@ struct ovs_action_hash { * @OVS_CT_ATTR_LABEL: %OVS_CT_LABEL_LEN value followed by %OVS_CT_LABEL_LEN * mask. For each bit set in the mask, the corresponding bit in the value is * copied to the connection tracking label field in the connection. + * @OVS_CT_ATTR_HELPER: variable length string defining conntrack ALG. */ enum ovs_ct_attr { OVS_CT_ATTR_UNSPEC, @@ -633,6 +634,8 @@ enum ovs_ct_attr { OVS_CT_ATTR_ZONE, /* u16 zone id. */ OVS_CT_ATTR_MARK, /* mark to associate with this connection. */ OVS_CT_ATTR_LABEL, /* label to associate with this connection. */ + OVS_CT_ATTR_HELPER, /* netlink helper to assist detection of + related connections. */ __OVS_CT_ATTR_MAX }; |