From 971427f353f3c42c8dcef62e7124440df68eb809 Mon Sep 17 00:00:00 2001 From: Andy Zhou Date: Mon, 15 Sep 2014 19:37:25 -0700 Subject: openvswitch: Add recirc and hash action. Recirc action allows a packet to reenter openvswitch processing. currently openvswitch lookup flow for packet received and execute set of actions on that packet, with help of recirc action we can process/modify the packet and recirculate it back in openvswitch for another pass. OVS hash action calculates 5-tupple hash and set hash in flow-key hash. This can be used along with recirculation for distributing packets among different ports for bond devices. For example: OVS bonding can use following actions: Match on: bond flow; Action: hash, recirc(id) Match on: recirc-id == id and hash lower bits == a; Action: output port_bond_a Signed-off-by: Andy Zhou Acked-by: Jesse Gross Signed-off-by: Pravin B Shelar --- net/openvswitch/flow.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'net/openvswitch/flow.h') diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h index 3869a540365c..0f5db4ec565d 100644 --- a/net/openvswitch/flow.h +++ b/net/openvswitch/flow.h @@ -72,6 +72,8 @@ struct sw_flow_key { u32 skb_mark; /* SKB mark. */ u16 in_port; /* Input switch port (or DP_MAX_PORTS). */ } __packed phy; /* Safe when right after 'tun_key'. */ + u32 ovs_flow_hash; /* Datapath computed hash value. */ + u32 recirc_id; /* Recirculation ID. */ struct { u8 src[ETH_ALEN]; /* Ethernet source address. */ u8 dst[ETH_ALEN]; /* Ethernet destination address. */ @@ -187,6 +189,7 @@ void ovs_flow_stats_get(const struct sw_flow *, struct ovs_flow_stats *, void ovs_flow_stats_clear(struct sw_flow *); u64 ovs_flow_used_time(unsigned long flow_jiffies); +int ovs_flow_key_update(struct sk_buff *skb, struct sw_flow_key *key); int ovs_flow_key_extract(struct ovs_key_ipv4_tunnel *tun_key, struct sk_buff *skb, struct sw_flow_key *key); /* Extract key from packet coming from userspace. */ -- cgit v1.2.3