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openvswitch: Add meter action support 

Implements OVS kernel meter action support.

Signed-off-by: Andy Zhou <azhou@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Zhou 2017-11-10 12:09:43 -08:00 committed by David S. Miller
parent 96fbc13d7e
commit cd8a6c3369
4 changed files with 16 additions and 0 deletions
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3
include/uapi/linux/openvswitch.h
View File

@ -838,6 +838,8 @@ struct ovs_action_push_eth {
* @OVS_ACTION_ATTR_CT_CLEAR: Clear conntrack state from the packet.
* @OVS_ACTION_ATTR_PUSH_NSH: push NSH header to the packet.
* @OVS_ACTION_ATTR_POP_NSH: pop the outermost NSH header off the packet.
* @OVS_ACTION_ATTR_METER: Run packet through a meter, which may drop the
* packet, or modify the packet (e.g., change the DSCP field).
*
* Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
* fields within a header are modifiable, e.g. the IPv4 protocol and fragment
@ -870,6 +872,7 @@ enum ovs_action_attr {
OVS_ACTION_ATTR_CT_CLEAR, /* No argument. */
OVS_ACTION_ATTR_PUSH_NSH, /* Nested OVS_NSH_KEY_ATTR_*. */
OVS_ACTION_ATTR_POP_NSH, /* No argument. */
OVS_ACTION_ATTR_METER, /* u32 meter ID. */
__OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted
* from userspace. */

6
net/openvswitch/actions.c
View File

@ -1330,6 +1330,12 @@ static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
case OVS_ACTION_ATTR_POP_NSH:
err = pop_nsh(skb, key);
break;
case OVS_ACTION_ATTR_METER:
if (ovs_meter_execute(dp, skb, key, nla_get_u32(a))) {
consume_skb(skb);
return 0;
}
}
if (unlikely(err)) {

1
net/openvswitch/datapath.h
View File

@ -30,6 +30,7 @@
#include "conntrack.h"
#include "flow.h"
#include "flow_table.h"
#include "meter.h"
#include "vport-internal_dev.h"
#define DP_MAX_PORTS USHRT_MAX

6
net/openvswitch/flow_netlink.c
View File

@ -90,6 +90,7 @@ static bool actions_may_change_flow(const struct nlattr *actions)
case OVS_ACTION_ATTR_SAMPLE:
case OVS_ACTION_ATTR_SET:
case OVS_ACTION_ATTR_SET_MASKED:
case OVS_ACTION_ATTR_METER:
default:
return true;
}
@ -2844,6 +2845,7 @@ static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr,
[OVS_ACTION_ATTR_POP_ETH] = 0,
[OVS_ACTION_ATTR_PUSH_NSH] = (u32)-1,
[OVS_ACTION_ATTR_POP_NSH] = 0,
[OVS_ACTION_ATTR_METER] = sizeof(u32),
};
const struct ovs_action_push_vlan *vlan;
int type = nla_type(a);
@ -3029,6 +3031,10 @@ static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr,
break;
}
case OVS_ACTION_ATTR_METER:
/* Non-existent meters are simply ignored. */
break;
default:
OVS_NLERR(log, "Unknown Action type %d", type);
return -EINVAL;