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openvswitch: Extend packet attribute for egress tunnel info

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OVS vswitch has extended IPFIX exporter to export tunnel headers
to improve network visibility.
To export this information userspace needs to know egress tunnel
for given packet. By extending packet attributes datapath can
export egress tunnel info for given packet. So that userspace
can ask for egress tunnel info in userspace action. This
information is used to build IPFIX data for given flow.

Signed-off-by: Wenyu Zhang <wenyuz@vmware.com>
Acked-by: Romain Lenglet <rlenglet@vmware.com>
Acked-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
This commit is contained in:
Wenyu Zhang
2014-11-06 06:51:24 -08:00
committed by Pravin B Shelar
parent 9ba559d9ca
commit 8f0aad6f35
12 changed files with 275 additions and 31 deletions
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2
net/openvswitch/datapath.h
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@@ -114,12 +114,14 @@ struct ovs_skb_cb {
* @pid: Netlink PID to which packet should be sent. If @pid is 0 then no
* packet is sent and the packet is accounted in the datapath's @n_lost
* counter.
* @egress_tun_info: If nonnull, becomes %OVS_PACKET_ATTR_EGRESS_TUN_KEY.
*/
struct dp_upcall_info {
u8 cmd;
const struct sw_flow_key *key;
const struct nlattr *userdata;
u32 portid;
const struct ovs_tunnel_info *egress_tun_info;
};
/**