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* openvswitch: Add support for OVS_FLOW_ATTR_PROBE.Jarno Rajahalme2014-11-091-3/+3
| | | | | | | | | | 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 <jrajahalme@nicira.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
* openvswitch: Constify various function argumentsThomas Graf2014-11-091-2/+2
| | | | | | | Help produce better optimized code. Signed-off-by: Thomas Graf <tgraf@noironetworks.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
* openvswitch: Remove redundant key ref from upcall_info.Pravin B Shelar2014-11-091-7/+5
| | | | | | | | | struct dp_upcall_info has pointer to pkt_key which is already available in OVS_CB. This also simplifies upcall handling for gso packet. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Andy Zhou <azhou@nicira.com>
* openvswitch: Extend packet attribute for egress tunnel infoWenyu Zhang2014-11-091-0/+2
| | | | | | | | | | | | | | | 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>
* openvswitch: Remove flow member from struct ovs_skb_cbLorand Jakab2014-11-051-3/+1
| | | | | | | | | The 'flow' memeber was chosen for removal because it's only used in ovs_execute_actions() we can pass it as argument to this function. Signed-off-by: Lorand Jakab <lojakab@cisco.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
* openvswitch: Wrap struct ovs_key_ipv4_tunnel in a new structure.Jesse Gross2014-10-061-1/+1
| | | | | | | | | | | | | | | | | Currently, the flow information that is matched for tunnels and the tunnel data passed around with packets is the same. However, as additional information is added this is not necessarily desirable, as in the case of pointers. This adds a new structure for tunnel metadata which currently contains only the existing struct. This change is purely internal to the kernel since the current OVS_KEY_ATTR_IPV4_TUNNEL is simply a compressed version of OVS_KEY_ATTR_TUNNEL that is translated at flow setup. Signed-off-by: Jesse Gross <jesse@nicira.com> Signed-off-by: Andy Zhou <azhou@nicira.com> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* openvswitch: Add recirc and hash action.Andy Zhou2014-09-151-1/+6
| | | | | | | | | | | | | | | | | | | | | 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>
* openvswitch: Use tun_key only for egress tunnel path.Pravin B Shelar2014-09-151-4/+4
| | | | | | | | | Currently tun_key is used for passing tunnel information on ingress and egress path, this cause confusion. Following patch removes its use on ingress path make it egress only parameter. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Andy Zhou <azhou@nicira.com>
* openvswitch: refactor ovs flow extract API.Pravin B Shelar2014-09-151-1/+4
| | | | | | | | | 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 <pshelar@nicira.com> Acked-by: Andy Zhou <azhou@nicira.com>
* openvswitch: Remove pkt_key from OVS_CBPravin B Shelar2014-09-151-3/+2
| | | | | | | | OVS keeps pointer to packet key in skb->cb, but the packet key is store on stack. This could make code bit tricky. So it is better to get rid of the pointer. Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
* net: Remove unlikely() for WARN_ON() conditionsThomas Graf2014-07-301-1/+1
| | | | | | | | No need for the unlikely(), WARN_ON() and BUG_ON() internally use unlikely() on the condition. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* openvswitch: Use net_ratelimit in OVS_NLERRJoe Perches2014-05-161-3/+5
| | | | | | | | | | | Each use of pr_<level>_once has a per-site flag. Some of the OVS_NLERR messages look as if seeing them multiple times could be useful, so use net_ratelimit() instead of pr_info_once. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: rename ->sync to ->syncpWANG Cong2014-02-151-1/+1
| | | | | | | | | | | | Openvswitch defines u64_stats_sync as ->sync rather than ->syncp, so fails to compile with netdev_alloc_pcpu_stats(). So just rename it to ->syncp. Reported-by: kbuild test robot <fengguang.wu@intel.com> Fixes: 1c213bd24ad04f4430031 (net: introduce netdev_alloc_pcpu_stats() for drivers) Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Flavio Leitner <fbl@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ovs: make functions localStephen Hemminger2014-01-061-2/+0
| | | | | | | | Several functions and datastructures could be local Found with 'make namespacecheck' Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Allow user space to announce ability to accept unaligned ↵Thomas Graf2014-01-061-0/+2
| | | | | | | | Netlink messages Signed-off-by: Thomas Graf <tgraf@suug.ch> Reviewed-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Silence RCU lockdep checks from flow lookup.Jesse Gross2014-01-061-0/+2
| | | | | | | | | | Flow lookup can happen either in packet processing context or userspace context but it was annotated as requiring RCU read lock to be held. This also allows OVS mutex to be held without causing warnings. Reported-by: Justin Pettit <jpettit@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com> Reviewed-by: Thomas Graf <tgraf@redhat.com>
* genetlink: pass family to functions using groupsJohannes Berg2013-11-191-0/+1
| | | | | | | | | This doesn't really change anything, but prepares for the next patch that will change the APIs to pass the group ID within the family, rather than the global group ID. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* openvswitch: collect mega flow mask statsAndy Zhou2013-10-221-0/+4
| | | | | | | | Collect mega flow mask stats. ovs-dpctl show command can be used to display them for debugging and performance tuning. Signed-off-by: Andy Zhou <azhou@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Move mega-flow list out of rehashing struct.Pravin B Shelar2013-10-041-4/+2
| | | | | | | | | ovs-flow rehash does not touch mega flow list. Following patch moves it dp struct datapath. Avoid one extra indirection for accessing mega-flow list head on every packet receive. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Restructure datapath.c and flow.cPravin B Shelar2013-10-031-0/+1
| | | | | | | | | | | | | | | Over the time datapath.c and flow.c has became pretty large files. Following patch restructures functionality of component into three different components: flow.c: contains flow extract. flow_netlink.c: netlink flow api. flow_table.c: flow table api. This patch restructures code without changing logic. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Move flow table rehashing to flow install.Pravin B Shelar2013-09-171-0/+2
| | | | | | | | | | | Rehashing in ovs-workqueue can cause ovs-mutex lock contentions in case of heavy flow setups where both needs ovs-mutex. So by moving rehashing to flow-setup we can eliminate contention. This also simplify ovs locking and reduces dependence on workqueue. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Mega flow implementationAndy Zhou2013-08-231-0/+6
| | | | | | | | | | | | | | | | | | Add wildcarded flow support in kernel datapath. Wildcarded flow can improve OVS flow set up performance by avoid sending matching new flows to the user space program. The exact performance boost will largely dependent on wildcarded flow hit rate. In case all new flows hits wildcard flows, the flow set up rate is within 5% of that of linux bridge module. Pravin has made significant contributions to this patch. Including API clean ups and bug fixes. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Andy Zhou <azhou@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Add gre tunnel support.Pravin B Shelar2013-06-191-0/+1
| | | | | | | | | | Add gre vport implementation. Most of gre protocol processing is pushed to gre module. It make use of gre demultiplexer therefore it can co-exist with linux device based gre tunnels. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* openvswitch: Add tunneling interface.Pravin B Shelar2013-06-191-0/+3
| | | | | | | | Add ovs tunnel interface for set tunnel action for userspace. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* openvswitch: Simplify datapath locking.Pravin B Shelar2013-04-151-22/+47
| | | | | | | | | | | | Currently OVS uses combination of genl and rtnl lock to protect datapath state. This was done due to networking stack locking. But this has complicated locking and there are few lock ordering issues with new tunneling protocols. Following patch simplifies locking by introducing new ovs mutex and now this lock is used to protect entire ovs state. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: datapath.h: Fix a stale comment.Andy Zhou2013-04-101-1/+0
| | | | | Signed-off-by: Andy Zhou <azhou@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Allow OVS_USERSPACE_ATTR_USERDATA to be variable length.Ben Pfaff2013-02-221-1/+1
| | | | | | | | | | | | | | | Until now, the optional OVS_USERSPACE_ATTR_USERDATA attribute had to be exactly 64 bits long, if it was present. However, 64 bits is not enough space to associate as much information with a flow as would be convenient for some userspace features now under development. This commit generalizes the attribute, allowing it to be any length. This generalization is backward-compatible: if userspace only uses 64-bit attributes, then it will not see any change in behavior. CC: Romain Lenglet <rlenglet@vmware.com> Signed-off-by: Ben Pfaff <blp@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* netlink: Rename pid to portid to avoid confusionEric W. Biederman2012-09-101-1/+1
| | | | | | | | | | | | | | | It is a frequent mistake to confuse the netlink port identifier with a process identifier. Try to reduce this confusion by renaming fields that hold port identifiers portid instead of pid. I have carefully avoided changing the structures exported to userspace to avoid changing the userspace API. I have successfully built an allyesconfig kernel with this change. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* openvswitch: Increase maximum number of datapath ports.Pravin B Shelar2012-09-031-7/+26
| | | | | | | Use hash table to store ports of datapath. Allow 64K ports per switch. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Add support for network namespaces.Pravin B Shelar2012-08-221-2/+17
| | | | | | | | | | Following patch adds support for network namespace to openvswitch. Since it must release devices when namespaces are destroyed, a side effect of this patch is that the module no longer keeps a refcount but instead cleans up any state when it is unloaded. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* openvswitch: Replace Nicira Networks.Raju Subramanian2012-05-031-1/+1
| | | | | | | | Replaced all instances of Nicira Networks(, Inc) to Nicira, Inc. Signed-off-by: Raju Subramanian <rsubramanian@nicira.com> Signed-off-by: Ben Pfaff <blp@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
* net: remove version.h includes in net/openvswitch/Devendra Naga2012-01-171-1/+0
| | | | | | | remove version.h includes in net/openswitch/ as reported by make versioncheck. Signed-off-by: Devendra Naga <devendra.aaru@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Add Open vSwitch kernel components.Jesse Gross2011-12-031-0/+125
Open vSwitch is a multilayer Ethernet switch targeted at virtualized environments. In addition to supporting a variety of features expected in a traditional hardware switch, it enables fine-grained programmatic extension and flow-based control of the network. This control is useful in a wide variety of applications but is particularly important in multi-server virtualization deployments, which are often characterized by highly dynamic endpoints and the need to maintain logical abstractions for multiple tenants. The Open vSwitch datapath provides an in-kernel fast path for packet forwarding. It is complemented by a userspace daemon, ovs-vswitchd, which is able to accept configuration from a variety of sources and translate it into packet processing rules. See http://openvswitch.org for more information and userspace utilities. Signed-off-by: Jesse Gross <jesse@nicira.com>
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