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| author | Andy Zhou <azhou@nicira.com> | 2014-09-15 19:37:25 -0700 |
|---|---|---|
| committer | Pravin B Shelar <pshelar@nicira.com> | 2014-09-15 23:28:14 -0700 |
| commit | 971427f353f3c42c8dcef62e7124440df68eb809 (patch) | |
| tree | 7eed9ed50fe70cfc82ce33e12a13147ad0de580c /net/openvswitch/flow.h | |
| parent | 32ae87ff795781b7ceffc44b7c694c1bb206a266 (diff) | |
| download | lwn-971427f353f3c42c8dcef62e7124440df68eb809.tar.gz lwn-971427f353f3c42c8dcef62e7124440df68eb809.zip | |
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 <azhou@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Diffstat (limited to 'net/openvswitch/flow.h')
| -rw-r--r-- | net/openvswitch/flow.h | 3 |
1 files changed, 3 insertions, 0 deletions
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. */ |