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1f16131837
This patch first defines the dpif interface for a datapath to support adding, deleting, getting and dumping conntrack timeout policy. The timeout policy is identified by a 4 bytes unsigned integer in datapath, and it currently support timeout for TCP, UDP, and ICMP protocols. Moreover, this patch provides the implementation for Linux kernel datapath in dpif-netlink. In Linux kernel, the timeout policy is maintained per L3/L4 protocol, and it is identified by 32 bytes null terminated string. On the other hand, in vswitchd, the timeout policy is a generic one that consists of all the supported L4 protocols. Therefore, one of the main task in dpif-netlink is to break down the generic timeout policy into 6 sub policies (ipv4 tcp, udp, icmp, and ipv6 tcp, udp, icmp), and push down the configuration using the netlink API in netlink-conntrack.c. This patch also adds missing symbols in the windows datapath so that the build on windows can pass. Appveyor CI: * https://ci.appveyor.com/project/YiHungWei/ovs/builds/26387754 Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com> Acked-by: Alin Gabriel Serdean <aserdean@ovn.org> Signed-off-by: Justin Pettit <jpettit@ovn.org>