Re: [PATCHv4 net-next 06/10] openvswitch: Allow matching on conntrack mark

From: Joe Stringer
Date: Thu Aug 20 2015 - 20:41:24 EST


On 19 August 2015 at 13:47, Pravin Shelar <pshelar@xxxxxxxxxx> wrote:
> On Tue, Aug 18, 2015 at 4:39 PM, Joe Stringer <joestringer@xxxxxxxxxx> wrote:
>> Allow matching and setting the conntrack mark field. As with conntrack
>> state and zone, these are populated when the CT action is executed,
>> and are made available for matching via RECIRC. To write to this field,
>> a value and optional mark can be passed as part of the conntrack action.
>>
>> E.g.: actions:ct(zone=0),ct(zone=1,mark=1)
>>
>> This will perform conntrack lookup in zone 0, then lookup in zone 1,
>> then modify the mark for the entry in zone 1. The conntrack entry itself
>> must be committed using the "commit" flag in the conntrack action flags
>> for this change to persist.
>>
>> Signed-off-by: Justin Pettit <jpettit@xxxxxxxxxx>
>> Signed-off-by: Joe Stringer <joestringer@xxxxxxxxxx>
>> ---
>> v1-v3: No change.
>> v4: Only allow setting conntrack mark via ct action.
>> Documentation tweaks.
>> ---
>> include/uapi/linux/openvswitch.h | 5 ++++
>> net/openvswitch/actions.c | 1 +
>> net/openvswitch/conntrack.c | 61 ++++++++++++++++++++++++++++++++++++++--
>> net/openvswitch/conntrack.h | 1 +
>> net/openvswitch/flow.h | 1 +
>> net/openvswitch/flow_netlink.c | 15 +++++++++-
>> 6 files changed, 80 insertions(+), 4 deletions(-)
>>
>> diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h
>> index 55f5997..7a185b5 100644
>> --- a/include/uapi/linux/openvswitch.h
>> +++ b/include/uapi/linux/openvswitch.h
>> @@ -325,6 +325,7 @@ enum ovs_key_attr {
>> * the accepted length of the array. */
>> OVS_KEY_ATTR_CT_STATE, /* u8 bitmask of OVS_CS_F_* */
>> OVS_KEY_ATTR_CT_ZONE, /* u16 connection tracking zone. */
>> + OVS_KEY_ATTR_CT_MARK, /* u32 connection tracking mark */
>>
>> #ifdef __KERNEL__
>> OVS_KEY_ATTR_TUNNEL_INFO, /* struct ip_tunnel_info */
>> @@ -613,11 +614,15 @@ struct ovs_action_hash {
>> * enum ovs_ct_attr - Attributes for %OVS_ACTION_ATTR_CT action.
>> * @OVS_CT_ATTR_FLAGS: u32 connection tracking flags.
>> * @OVS_CT_ATTR_ZONE: u16 connection tracking zone.
>> + * @OVS_CT_ATTR_MARK: u32 value followed by u32 mask. For each bit set in the
>> + * mask, the corresponding bit in the value is copied to the connection
>> + * tracking mark field in the connection.
>> */
>> enum ovs_ct_attr {
>> OVS_CT_ATTR_UNSPEC,
>> OVS_CT_ATTR_FLAGS, /* u8 bitmask of OVS_CT_F_*. */
>> OVS_CT_ATTR_ZONE, /* u16 zone id. */
>> + OVS_CT_ATTR_MARK, /* mark to associate with this connection. */
>> __OVS_CT_ATTR_MAX
>> };
>>
> ovs_ct_action_to_attr() is not updated to return complete datapath
> action back to userpsace. same issue exist in set label patch.

Fixed, thanks for the review.
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