kernel/net/openvswitch/flow_netlink.h, branch linux-4.1.y

openvswitch: Add support for unique flow IDs.

2015-01-26T23:45:50Z

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 Acked-by: Pravin B Shelar Signed-off-by: David S. Miller

openvswitch: Refactor ovs_nla_fill_match().

2015-01-26T23:45:49Z

Refactor the ovs_nla_fill_match() function into separate netlink serialization functions ovs_nla_put_{unmasked_key,mask}(). Modify ovs_nla_put_flow() to handle attribute nesting and expose the 'is_mask' parameter - all callers need to nest the flow, and callers have better knowledge about whether it is serializing a mask or not. Signed-off-by: Joe Stringer Acked-by: Pravin B Shelar Signed-off-by: David S. Miller

openvswitch: Add support for OVS_FLOW_ATTR_PROBE.

2014-11-10T02:58:44Z

This new flag is useful for suppressing error logging while probing for datapath features using flow commands. For backwards compatibility reasons the commands are executed normally, but error logging is suppressed. Signed-off-by: Jarno Rajahalme Signed-off-by: Pravin B Shelar

openvswitch: Extend packet attribute for egress tunnel info

2014-11-10T02:58:44Z

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 Acked-by: Romain Lenglet Acked-by: Ben Pfaff Signed-off-by: Pravin B Shelar

openvswitch: Refactor action alloc and copy api.

2014-11-06T07:52:35Z

There are two separate API to allocate and copy actions list. Anytime OVS needs to copy action list, it needs to call both functions. Following patch moves action allocation to copy function to avoid code duplication. Signed-off-by: Pravin B Shelar Acked-by: Jarno Rajahalme

openvswitch: Move key_attr_size() to flow_netlink.h.

2014-11-06T07:52:35Z

flow-netlink has netlink related code. Signed-off-by: Joe Stringer Signed-off-by: Pravin B Shelar

openvswitch: Add basic MPLS support to kernel

2014-11-06T07:52:33Z

Allow datapath to recognize and extract MPLS labels into flow keys and execute actions which push, pop, and set labels on packets. Based heavily on work by Leo Alterman, Ravi K, Isaku Yamahata and Joe Stringer. Cc: Ravi K Cc: Leo Alterman Cc: Isaku Yamahata Cc: Joe Stringer Signed-off-by: Simon Horman Signed-off-by: Jesse Gross Signed-off-by: Pravin B Shelar

openvswitch: refactor ovs flow extract API.

2014-09-16T06:28:13Z

OVS flow extract is called on packet receive or packet execute code path. Following patch defines separate API for extracting flow-key in packet execute code path. Signed-off-by: Pravin B Shelar Acked-by: Andy Zhou

openvswitch: Remove 5-tuple optimization.

2014-05-16T20:40:29Z

The 5-tuple optimization becomes unnecessary with a later per-NUMA node stats patch. Remove it first to make the changes easier to grasp. Signed-off-by: Jarno Rajahalme Signed-off-by: Jesse Gross

openvswitch: Per cpu flow stats.

2014-01-06T23:52:24Z

With mega flow implementation ovs flow can be shared between multiple CPUs which makes stats updates highly contended operation. This patch uses per-CPU stats in cases where a flow is likely to be shared (if there is a wildcard in the 5-tuple and therefore likely to be spread by RSS). In other situations, it uses the current strategy, saving memory and allocation time. Signed-off-by: Pravin B Shelar Signed-off-by: Jesse Gross