74ed7ab926
Previously, flows were manipulated by userspace specifying a full, unmasked flow key. This adds significant burden onto flow serialization/deserialization, particularly when dumping flows. This patch adds an alternative way to refer to flows using a variable-length "unique flow identifier" (UFID). At flow setup time, userspace may specify a UFID for a flow, which is stored with the flow and inserted into a separate table for lookup, in addition to the standard flow table. Flows created using a UFID must be fetched or deleted using the UFID. All flow dump operations may now be made more terse with OVS_UFID_F_* flags. For example, the OVS_UFID_F_OMIT_KEY flag allows responses to omit the flow key from a datapath operation if the flow has a corresponding UFID. This significantly reduces the time spent assembling and transacting netlink messages. With all OVS_UFID_F_OMIT_* flags enabled, the datapath only returns the UFID and statistics for each flow during flow dump, increasing ovs-vswitchd revalidator performance by 40% or more. Signed-off-by: Joe Stringer <joestringer@nicira.com> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
/*
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* Copyright (c) 2007-2013 Nicira, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*/
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#ifndef FLOW_NETLINK_H
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#define FLOW_NETLINK_H 1
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#include <linux/kernel.h>
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#include <linux/netlink.h>
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#include <linux/openvswitch.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#include <linux/rcupdate.h>
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#include <linux/if_ether.h>
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#include <linux/in6.h>
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#include <linux/jiffies.h>
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#include <linux/time.h>
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#include <linux/flex_array.h>
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#include <net/inet_ecn.h>
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#include <net/ip_tunnels.h>
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#include "flow.h"
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size_t ovs_tun_key_attr_size(void);
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size_t ovs_key_attr_size(void);
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void ovs_match_init(struct sw_flow_match *match,
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struct sw_flow_key *key, struct sw_flow_mask *mask);
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int ovs_nla_put_key(const struct sw_flow_key *, const struct sw_flow_key *,
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int attr, bool is_mask, struct sk_buff *);
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int ovs_nla_get_flow_metadata(const struct nlattr *, struct sw_flow_key *,
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bool log);
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int ovs_nla_put_identifier(const struct sw_flow *flow, struct sk_buff *skb);
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int ovs_nla_put_masked_key(const struct sw_flow *flow, struct sk_buff *skb);
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int ovs_nla_put_mask(const struct sw_flow *flow, struct sk_buff *skb);
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int ovs_nla_get_match(struct sw_flow_match *, const struct nlattr *key,
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const struct nlattr *mask, bool log);
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int ovs_nla_put_egress_tunnel_key(struct sk_buff *,
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const struct ovs_tunnel_info *);
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bool ovs_nla_get_ufid(struct sw_flow_id *, const struct nlattr *, bool log);
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int ovs_nla_get_identifier(struct sw_flow_id *sfid, const struct nlattr *ufid,
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const struct sw_flow_key *key, bool log);
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u32 ovs_nla_get_ufid_flags(const struct nlattr *attr);
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int ovs_nla_copy_actions(const struct nlattr *attr,
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const struct sw_flow_key *key,
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struct sw_flow_actions **sfa, bool log);
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int ovs_nla_put_actions(const struct nlattr *attr,
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int len, struct sk_buff *skb);
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void ovs_nla_free_flow_actions(struct sw_flow_actions *);
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#endif /* flow_netlink.h */
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