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openvswitch: Add meter infrastructure

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OVS kernel datapath so far does not support Openflow meter action.
This is the first stab at adding kernel datapath meter support.
This implementation supports only drop band type.

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 12:09:42 -08:00 • committed by David S. Miller
parent 9602c01e57
commit 96fbc13d7e
5 changed files with 674 additions and 2 deletions
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14
net/openvswitch/datapath.c
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@ -55,6 +55,7 @@
#include "flow.h"
#include "flow_table.h"
#include "flow_netlink.h"
#include "meter.h"
#include "vport-internal_dev.h"
#include "vport-netdev.h"
@ -174,6 +175,7 @@ static void destroy_dp_rcu(struct rcu_head *rcu)
ovs_flow_tbl_destroy(&dp->table);
free_percpu(dp->stats_percpu);
kfree(dp->ports);
ovs_meters_exit(dp);
kfree(dp);
}
@ -1572,6 +1574,10 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++)
INIT_HLIST_HEAD(&dp->ports[i]);
err = ovs_meters_init(dp);
if (err)
goto err_destroy_ports_array;
/* Set up our datapath device. */
parms.name = nla_data(a[OVS_DP_ATTR_NAME]);
parms.type = OVS_VPORT_TYPE_INTERNAL;
@ -1600,7 +1606,7 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
ovs_dp_reset_user_features(skb, info);
}
goto err_destroy_ports_array;
goto err_destroy_meters;
}
err = ovs_dp_cmd_fill_info(dp, reply, info->snd_portid,
@ -1615,8 +1621,10 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
ovs_notify(&dp_datapath_genl_family, reply, info);
return 0;
err_destroy_ports_array:
err_destroy_meters:
ovs_unlock();
ovs_meters_exit(dp);
err_destroy_ports_array:
kfree(dp->ports);
err_destroy_percpu:
free_percpu(dp->stats_percpu);
@ -2265,6 +2273,7 @@ static struct genl_family * const dp_genl_families[] = {
&dp_vport_genl_family,
&dp_flow_genl_family,
&dp_packet_genl_family,
&dp_meter_genl_family,
};
static void dp_unregister_genl(int n_families)
@ -2445,3 +2454,4 @@ MODULE_ALIAS_GENL_FAMILY(OVS_DATAPATH_FAMILY);
MODULE_ALIAS_GENL_FAMILY(OVS_VPORT_FAMILY);
MODULE_ALIAS_GENL_FAMILY(OVS_FLOW_FAMILY);
MODULE_ALIAS_GENL_FAMILY(OVS_PACKET_FAMILY);
MODULE_ALIAS_GENL_FAMILY(OVS_METER_FAMILY);