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| author | Jarno Rajahalme <jarno@ovn.org> | 2017-04-22 02:48:06 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-24 20:53:25 +0300 |
| commit | 120645513f55a4ac5543120d9e79925d30a0156f (patch) | |
| tree | 5a079ff418ef0a96bdd11558f90295d3461bd465 /include | |
| parent | abd0a4f2b41812e9ba334945e256909e3d28da57 (diff) | |
| download | linux-120645513f55a4ac5543120d9e79925d30a0156f.tar.xz | |
openvswitch: Add eventmask support to CT action.
Add a new optional conntrack action attribute OVS_CT_ATTR_EVENTMASK,
which can be used in conjunction with the commit flag
(OVS_CT_ATTR_COMMIT) to set the mask of bits specifying which
conntrack events (IPCT_*) should be delivered via the Netfilter
netlink multicast groups. Default behavior depends on the system
configuration, but typically a lot of events are delivered. This can be
very chatty for the NFNLGRP_CONNTRACK_UPDATE group, even if only some
types of events are of interest.
Netfilter core init_conntrack() adds the event cache extension, so we
only need to set the ctmask value. However, if the system is
configured without support for events, the setting will be skipped due
to extension not being found.
Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
Reviewed-by: Greg Rose <gvrose8192@gmail.com>
Acked-by: Joe Stringer <joe@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/openvswitch.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h index 66d1c3ccfd8e..61b7d36dfe34 100644 --- a/include/uapi/linux/openvswitch.h +++ b/include/uapi/linux/openvswitch.h @@ -693,6 +693,17 @@ struct ovs_action_hash { * nothing if the connection is already committed will check that the current * packet is in conntrack entry's original direction. If directionality does * not match, will delete the existing conntrack entry and commit a new one. + * @OVS_CT_ATTR_EVENTMASK: Mask of bits indicating which conntrack event types + * (enum ip_conntrack_events IPCT_*) should be reported. For any bit set to + * zero, the corresponding event type is not generated. Default behavior + * depends on system configuration, but typically all event types are + * generated, hence listening on NFNLGRP_CONNTRACK_UPDATE events may get a lot + * of events. Explicitly passing this attribute allows limiting the updates + * received to the events of interest. The bit 1 << IPCT_NEW, 1 << + * IPCT_RELATED, and 1 << IPCT_DESTROY must be set to ones for those events to + * be received on NFNLGRP_CONNTRACK_NEW and NFNLGRP_CONNTRACK_DESTROY groups, + * respectively. Remaining bits control the changes for which an event is + * delivered on the NFNLGRP_CONNTRACK_UPDATE group. */ enum ovs_ct_attr { OVS_CT_ATTR_UNSPEC, @@ -704,6 +715,7 @@ enum ovs_ct_attr { related connections. */ OVS_CT_ATTR_NAT, /* Nested OVS_NAT_ATTR_* */ OVS_CT_ATTR_FORCE_COMMIT, /* No argument */ + OVS_CT_ATTR_EVENTMASK, /* u32 mask of IPCT_* events. */ __OVS_CT_ATTR_MAX }; |