[v2,2/4] ethdev: tunnel offload model
diff mbox series

Message ID 20200908201552.14423-3-getelson@nvidia.com
State Superseded
Delegated to: Ferruh Yigit
Headers show
Series
  • Tunnel Offload API
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Context Check Description
ci/checkpatch success coding style OK

Commit Message

Gregory Etelson Sept. 8, 2020, 8:15 p.m. UTC
From: Eli Britstein <elibr@mellanox.com>

Rte_flow API provides the building blocks for vendor agnostic flow
classification offloads.  The rte_flow match and action primitives are
fine grained, thus enabling DPDK applications the flexibility to
offload network stacks and complex pipelines.

Applications wishing to offload complex data structures (e.g. tunnel
virtual ports) are required to use the rte_flow primitives, such as
group, meta, mark, tag and others to model their high level objects.

The hardware model design for high level software objects is not
trivial.  Furthermore, an optimal design is often vendor specific.

The goal of this API is to provide applications with the hardware
offload model for common high level software objects which is optimal
in regards to the underlying hardware.

Tunnel ports are the first of such objects.

Tunnel ports
------------
Ingress processing of tunneled traffic requires the classification of
the tunnel type followed by a decap action.

In software, once a packet is decapsulated the in_port field is
changed to a virtual port representing the tunnel type. The outer
header fields are stored as packet metadata members and may be matched
by proceeding flows.

Openvswitch, for example, uses two flows:
1. classification flow - setting the virtual port representing the
tunnel type For example: match on udp port 4789
actions=tnl_pop(vxlan_vport)
2. steering flow according to outer and inner header matches match on
in_port=vxlan_vport and outer/inner header matches actions=forward to
p ort X The benefits of multi-flow tables are described in [1].

Offloading tunnel ports
-----------------------
Tunnel ports introduce a new stateless field that can be matched on.
Currently the rte_flow library provides an API to encap, decap and
match on tunnel headers. However, there is no rte_flow primitive to
set and match tunnel virtual ports.

There are several possible hardware models for offloading virtual
tunnel port flows including, but not limited to, the following:
1. Setting the virtual port on a hw register using the
rte_flow_action_mark/ rte_flow_action_tag/rte_flow_set_meta objects.
2. Mapping a virtual port to an rte_flow group
3. Avoiding the need to match on transient objects by merging
multi-table flows to a single rte_flow rule.

Every approach has its pros and cons.  The preferred approach should
take into account the entire system architecture and is very often
vendor specific.

The proposed rte_flow_tunnel_decap_set helper function (drafted below)
is designed to provide a common, vendor agnostic, API for setting the
virtual port value.  The helper API enables PMD implementations to
return vendor specific combination of rte_flow actions realizing the
vendor's hardware model for setting a tunnel port.  Applications may
append the list of actions returned from the helper function when
creating an rte_flow rule in hardware.

Similarly, the rte_flow_tunnel_match helper (drafted below)
allows for multiple hardware implementations to return a list of
fte_flow items.

Miss handling
-------------
Packets going through multiple rte_flow groups are exposed to hw
misses due to partial packet processing. In such cases, the software
should continue the packet's processing from the point where the
hardware missed.

We propose a generic rte_flow_restore structure providing the state
that was stored in hardware when the packet missed.

Currently, the structure will provide the tunnel state of the packet
that missed, namely:
1. The group id that missed
2. The tunnel port that missed
3. Tunnel information that was stored in memory (due to decap action).
In the future, we may add additional fields as more state may be
stored in the device memory (e.g. ct_state).

Applications may query the state via a new
rte_flow_tunnel_get_restore_info(mbuf) API, thus allowing
a vendor specific implementation.

VXLAN Code example:
Assume application needs to do inner NAT on VXLAN packet.
The first  rule in group 0:

flow create <port id> ingress group 0
  pattern eth / ipv4 / udp dst is 4789 / vxlan / end
  actions {pmd actions} / jump group 3 / end

First VXLAN packet that arrives matches the rule in group 0 and jumps
to group 3 In group 3 the packet will miss since there is no flow to
match and will be uploaded to application.  Application  will call
rte_flow_get_restore_info() to get the packet outer header.
Application will insert a new rule in group 3 to match outer and inner
headers:

flow create <port id> ingress group 3
  pattern {pmd items} / eth / ipv4 dst is 172.10.10.1 /
          udp dst 4789 / vxlan vni is 10 /
          ipv4 dst is 184.1.2.3 / end
  actions  set_ipv4_dst  186.1.1.1 / queue index 3 / end

Resulting of rules will be that VXLAN packet with vni=10, outer IPv4
dst=172.10.10.1 and inner IPv4 dst=184.1.2.3 will be received decaped
on queue 3 with IPv4 dst=186.1.1.1

Note: Packet in group 3 is considered decaped. All actions in that
group will be done on header that was inner before decap. Application
may specify outer header to be matched on.  It's PMD responsibility to
translate these items to outer metadata.

API usage:
/**
 * 1. Initiate RTE flow tunnel object
 */
const struct rte_flow_tunnel tunnel = {
  .type = RTE_FLOW_ITEM_TYPE_VXLAN,
  .tun_id = 10,
}

/**
 * 2. Obtain PMD tunnel actions
 *
 * pmd_actions is an intermediate variable application uses to
 * compile actions array
 */
struct rte_flow_action **pmd_actions;
rte_flow_tunnel_decap_and_set(&tunnel, &pmd_actions,
                              &num_pmd_actions, &error);

/**
 * 3. offload the first  rule
 * matching on VXLAN traffic and jumps to group 3
 * (implicitly decaps packet)
 */
app_actions  =   jump group 3
rule_items = app_items;  /** eth / ipv4 / udp / vxlan  */
rule_actions = { pmd_actions, app_actions };
attr.group = 0;
flow_1 = rte_flow_create(port_id, &attr,
                         rule_items, rule_actions, &error);
/**
  * 4. after flow creation application does not need to keep tunnel
  * action resources.
  */
rte_flow_tunnel_action_release(port_id, pmd_actions,
                               num_pmd_actions);

/**
  * 5. After partially offloaded packet miss because there was no
  * matching rule handle miss on group 3
  */
struct rte_flow_restore_info info;
rte_flow_get_restore_info(port_id, mbuf, &info, &error);

/**
 * 6. Offload NAT rule:
 */
app_items = { eth / ipv4 dst is 172.10.10.1 / udp dst 4789 /
            vxlan vni is 10 / ipv4 dst is 184.1.2.3 }
app_actions = { set_ipv4_dst 186.1.1.1 / queue index 3 }

rte_flow_tunnel_match(&info.tunnel, &pmd_items,
                      &num_pmd_items,  &error);
rule_items = {pmd_items, app_items};
rule_actions = app_actions;
attr.group = info.group_id;
flow_2 = rte_flow_create(port_id, &attr,
                         rule_items, rule_actions, &error);

/**
 * 7. Release PMD items after rule creation
 */
rte_flow_tunnel_item_release(port_id, pmd_items, num_pmd_items);

References
1. https://mails.dpdk.org/archives/dev/2020-June/index.html

Signed-off-by: Eli Britstein <elibr@mellanox.com>
Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>
---
v2:
* Update commit log
---
 doc/guides/prog_guide/rte_flow.rst       | 105 ++++++++++++
 lib/librte_ethdev/rte_ethdev_version.map |   5 +
 lib/librte_ethdev/rte_flow.c             | 112 +++++++++++++
 lib/librte_ethdev/rte_flow.h             | 195 +++++++++++++++++++++++
 lib/librte_ethdev/rte_flow_driver.h      |  32 ++++
 5 files changed, 449 insertions(+)

Patch
diff mbox series

diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 3e5cd1e0d8..827ea0ca76 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -3018,6 +3018,111 @@  operations include:
 - Duplication of a complete flow rule description.
 - Pattern item or action name retrieval.
 
+Tunneled traffic offload
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+Provide software application with unified rules model for tunneled traffic
+regardless underlying hardware.
+
+ - The model introduces a concept of a virtual tunnel port (VTP).
+ - The model uses VTP to offload ingress tunneled network traffic 
+   with RTE flow rules.
+ - The model is implemented as set of helper functions. Each PMD
+   implements VTP offload according to underlying hardware offload
+   capabilities.  Applications must query PMD for VTP flow
+   items / actions before using in creation of a VTP flow rule.
+
+The model components:
+
+- Virtual Tunnel Port (VTP) is a stateless software object that
+  describes tunneled network traffic.  VTP object usually contains
+  descriptions of outer headers, tunnel headers and inner headers.
+- Tunnel Steering flow Rule (TSR) detects tunneled packets and
+  delegates them to tunnel processing infrastructure, implemented
+  in PMD for optimal hardware utilization, for further processing.
+- Tunnel Matching flow Rule (TMR) verifies packet configuration and
+  runs offload actions in case of a match.
+
+Application actions:
+
+1 Initialize VTP object according to tunnel network parameters.
+
+2 Create TSR flow rule.
+
+2.1 Query PMD for VTP actions. Application can query for VTP actions more than once.
+
+  .. code-block:: c
+
+    int
+    rte_flow_tunnel_decap_set(uint16_t port_id,
+                              struct rte_flow_tunnel *tunnel,
+                              struct rte_flow_action **pmd_actions,
+                              uint32_t *num_of_pmd_actions,
+                              struct rte_flow_error *error);
+
+2.2 Integrate PMD actions into TSR actions list.
+
+2.3 Create TSR flow rule.
+
+    .. code-block:: console
+
+      flow create <port> group 0 match {tunnel items} / end actions {PMD actions} / {App actions} / end
+
+3 Create TMR flow rule.
+
+3.1 Query PMD for VTP items. Application can query for VTP items more than once.
+
+    .. code-block:: c
+
+      int
+      rte_flow_tunnel_match(uint16_t port_id,
+                            struct rte_flow_tunnel *tunnel,
+                            struct rte_flow_item **pmd_items,
+                            uint32_t *num_of_pmd_items,
+                            struct rte_flow_error *error);
+
+3.2 Integrate PMD items into TMR items list.
+
+3.3 Create TMR flow rule.
+
+    .. code-block:: console
+
+      flow create <port> group 0 match {PMD items} / {APP items} / end actions {offload actions} / end
+
+The model provides helper function call to restore packets that miss
+tunnel TMR rules to its original state:
+
+.. code-block:: c
+
+  int
+  rte_flow_get_restore_info(uint16_t port_id,
+                            struct rte_mbuf *mbuf,
+                            struct rte_flow_restore_info *info,
+                            struct rte_flow_error *error);
+
+rte_tunnel object filled by the call inside
+``rte_flow_restore_info *info parameter`` can be used by the application
+to create new TMR rule for that tunnel.
+
+The model requirements:
+
+Software application must initialize
+rte_tunnel object with tunnel parameters before calling
+rte_flow_tunnel_decap_set() & rte_flow_tunnel_match().
+
+PMD actions array obtained in rte_flow_tunnel_decap_set() must be
+released by application with rte_flow_action_release() call.
+Application can release the actionsfter TSR rule was created.
+
+PMD items array obtained with rte_flow_tunnel_match() must be released
+by application with rte_flow_item_release() call.  Application can
+release the items after rule was created. However, if the application
+needs to create additional TMR rule for the same tunnel it will need
+to obtain PMD items again.
+
+Application cannot destroy rte_tunnel object before it releases all
+PMD actions & PMD items referencing that tunnel.
+
 Caveats
 -------
 
diff --git a/lib/librte_ethdev/rte_ethdev_version.map b/lib/librte_ethdev/rte_ethdev_version.map
index 1212a17d32..8bb6b99d4a 100644
--- a/lib/librte_ethdev/rte_ethdev_version.map
+++ b/lib/librte_ethdev/rte_ethdev_version.map
@@ -241,6 +241,11 @@  EXPERIMENTAL {
 	__rte_ethdev_trace_rx_burst;
 	__rte_ethdev_trace_tx_burst;
 	rte_flow_get_aged_flows;
+	rte_flow_tunnel_decap_set;
+	rte_flow_tunnel_match;
+	rte_flow_tunnel_get_restore_info;
+	rte_flow_tunnel_action_decap_release;
+	rte_flow_tunnel_item_release;
 };
 
 INTERNAL {
diff --git a/lib/librte_ethdev/rte_flow.c b/lib/librte_ethdev/rte_flow.c
index 9905426bc9..23e364f337 100644
--- a/lib/librte_ethdev/rte_flow.c
+++ b/lib/librte_ethdev/rte_flow.c
@@ -1269,3 +1269,115 @@  rte_flow_get_aged_flows(uint16_t port_id, void **contexts,
 				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 				  NULL, rte_strerror(ENOTSUP));
 }
+
+int
+rte_flow_tunnel_decap_set(uint16_t port_id,
+			  struct rte_flow_tunnel *tunnel,
+			  struct rte_flow_action **actions,
+			  uint32_t *num_of_actions,
+			  struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (likely(!!ops->tunnel_decap_set)) {
+		return flow_err(port_id,
+				ops->tunnel_decap_set(dev, tunnel, actions,
+						      num_of_actions, error),
+				error);
+	}
+	return rte_flow_error_set(error, ENOTSUP,
+				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				  NULL, rte_strerror(ENOTSUP));
+}
+
+int
+rte_flow_tunnel_match(uint16_t port_id,
+		      struct rte_flow_tunnel *tunnel,
+		      struct rte_flow_item **items,
+		      uint32_t *num_of_items,
+		      struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (likely(!!ops->tunnel_match)) {
+		return flow_err(port_id,
+				ops->tunnel_match(dev, tunnel, items,
+						  num_of_items, error),
+				error);
+	}
+	return rte_flow_error_set(error, ENOTSUP,
+				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				  NULL, rte_strerror(ENOTSUP));
+}
+
+int
+rte_flow_tunnel_get_restore_info(uint16_t port_id,
+				 struct rte_mbuf *m,
+				 struct rte_flow_restore_info *restore_info,
+				 struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (likely(!!ops->get_restore_info)) {
+		return flow_err(port_id,
+				ops->get_restore_info(dev, m, restore_info,
+						      error),
+				error);
+	}
+	return rte_flow_error_set(error, ENOTSUP,
+				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				  NULL, rte_strerror(ENOTSUP));
+}
+
+int
+rte_flow_tunnel_action_decap_release(uint16_t port_id,
+				     struct rte_flow_action *actions,
+				     uint32_t num_of_actions,
+				     struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (likely(!!ops->action_release)) {
+		return flow_err(port_id,
+				ops->action_release(dev, actions,
+						    num_of_actions, error),
+				error);
+	}
+	return rte_flow_error_set(error, ENOTSUP,
+				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				  NULL, rte_strerror(ENOTSUP));
+}
+
+int
+rte_flow_tunnel_item_release(uint16_t port_id,
+			     struct rte_flow_item *items,
+			     uint32_t num_of_items,
+			     struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (likely(!!ops->item_release)) {
+		return flow_err(port_id,
+				ops->item_release(dev, items,
+						  num_of_items, error),
+				error);
+	}
+	return rte_flow_error_set(error, ENOTSUP,
+				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				  NULL, rte_strerror(ENOTSUP));
+}
diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
index da8bfa5489..d485fb2f77 100644
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h
@@ -3357,6 +3357,201 @@  int
 rte_flow_get_aged_flows(uint16_t port_id, void **contexts,
 			uint32_t nb_contexts, struct rte_flow_error *error);
 
+/* Tunnel has a type and the key information. */
+struct rte_flow_tunnel {
+	/**
+	 * Tunnel type, for example RTE_FLOW_ITEM_TYPE_VXLAN,
+	 * RTE_FLOW_ITEM_TYPE_NVGRE etc.
+	 */
+	enum rte_flow_item_type	type;
+	uint64_t tun_id; /**< Tunnel identification. */
+
+	RTE_STD_C11
+	union {
+		struct {
+			rte_be32_t src_addr; /**< IPv4 source address. */
+			rte_be32_t dst_addr; /**< IPv4 destination address. */
+		} ipv4;
+		struct {
+			uint8_t src_addr[16]; /**< IPv6 source address. */
+			uint8_t dst_addr[16]; /**< IPv6 destination address. */
+		} ipv6;
+	};
+	rte_be16_t tp_src; /**< Tunnel port source. */
+	rte_be16_t tp_dst; /**< Tunnel port destination. */
+	uint16_t   tun_flags; /**< Tunnel flags. */
+
+	bool       is_ipv6; /**< True for valid IPv6 fields. Otherwise IPv4. */
+
+	/**
+	 * following members required to restore packet
+	 * after miss
+	 */
+	uint8_t    tos; /**< TOS for IPv4, TC for IPv6. */
+	uint8_t    ttl; /**< TTL for IPv4, HL for IPv6. */
+	uint32_t label; /**< Flow Label for IPv6. */
+};
+
+/**
+ * Indicate that the packet has a tunnel.
+ */
+#define RTE_FLOW_RESTORE_INFO_TUNNEL  (1ULL << 0)
+
+/**
+ * Indicate that the packet has a non decapsulated tunnel header.
+ */
+#define RTE_FLOW_RESTORE_INFO_ENCAPSULATED  (1ULL << 1)
+
+/**
+ * Indicate that the packet has a group_id.
+ */
+#define RTE_FLOW_RESTORE_INFO_GROUP_ID  (1ULL << 2)
+
+/**
+ * Restore information structure to communicate the current packet processing
+ * state when some of the processing pipeline is done in hardware and should
+ * continue in software.
+ */
+struct rte_flow_restore_info {
+	/**
+	 * Bitwise flags (RTE_FLOW_RESTORE_INFO_*) to indicate validation of
+	 * other fields in struct rte_flow_restore_info.
+	 */
+	uint64_t flags;
+	uint32_t group_id; /**< Group ID where packed missed */
+	struct rte_flow_tunnel tunnel; /**< Tunnel information. */
+};
+
+/**
+ * Allocate an array of actions to be used in rte_flow_create, to implement
+ * tunnel-decap-set for the given tunnel.
+ * Sample usage:
+ *   actions vxlan_decap / tunnel-decap-set(tunnel properties) /
+ *            jump group 0 / end
+ *
+ * @param port_id
+ *   Port identifier of Ethernet device.
+ * @param[in] tunnel
+ *   Tunnel properties.
+ * @param[out] actions
+ *   Array of actions to be allocated by the PMD. This array should be
+ *   concatenated with the actions array provided to rte_flow_create.
+ * @param[out] num_of_actions
+ *   Number of actions allocated.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL. PMDs initialize this
+ *   structure in case of error only.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+__rte_experimental
+int
+rte_flow_tunnel_decap_set(uint16_t port_id,
+			  struct rte_flow_tunnel *tunnel,
+			  struct rte_flow_action **actions,
+			  uint32_t *num_of_actions,
+			  struct rte_flow_error *error);
+
+/**
+ * Allocate an array of items to be used in rte_flow_create, to implement
+ * tunnel-match for the given tunnel.
+ * Sample usage:
+ *   pattern tunnel-match(tunnel properties) / outer-header-matches /
+ *           inner-header-matches / end
+ *
+ * @param port_id
+ *   Port identifier of Ethernet device.
+ * @param[in] tunnel
+ *   Tunnel properties.
+ * @param[out] items
+ *   Array of items to be allocated by the PMD. This array should be
+ *   concatenated with the items array provided to rte_flow_create.
+ * @param[out] num_of_items
+ *   Number of items allocated.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL. PMDs initialize this
+ *   structure in case of error only.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+__rte_experimental
+int
+rte_flow_tunnel_match(uint16_t port_id,
+		      struct rte_flow_tunnel *tunnel,
+		      struct rte_flow_item **items,
+		      uint32_t *num_of_items,
+		      struct rte_flow_error *error);
+
+/**
+ * Populate the current packet processing state, if exists, for the given mbuf.
+ *
+ * @param port_id
+ *   Port identifier of Ethernet device.
+ * @param[in] m
+ *   Mbuf struct.
+ * @param[out] info
+ *   Restore information. Upon success contains the HW state.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL. PMDs initialize this
+ *   structure in case of error only.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+__rte_experimental
+int
+rte_flow_tunnel_get_restore_info(uint16_t port_id,
+				 struct rte_mbuf *m,
+				 struct rte_flow_restore_info *info,
+				 struct rte_flow_error *error);
+
+/**
+ * Release the action array as allocated by rte_flow_tunnel_decap_set.
+ *
+ * @param port_id
+ *   Port identifier of Ethernet device.
+ * @param[in] actions
+ *   Array of actions to be released.
+ * @param[in] num_of_actions
+ *   Number of elements in actions array.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL. PMDs initialize this
+ *   structure in case of error only.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+__rte_experimental
+int
+rte_flow_tunnel_action_decap_release(uint16_t port_id,
+				     struct rte_flow_action *actions,
+				     uint32_t num_of_actions,
+				     struct rte_flow_error *error);
+
+/**
+ * Release the item array as allocated by rte_flow_tunnel_match.
+ *
+ * @param port_id
+ *   Port identifier of Ethernet device.
+ * @param[in] items
+ *   Array of items to be released.
+ * @param[in] num_of_items
+ *   Number of elements in item array.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL. PMDs initialize this
+ *   structure in case of error only.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+__rte_experimental
+int
+rte_flow_tunnel_item_release(uint16_t port_id,
+			     struct rte_flow_item *items,
+			     uint32_t num_of_items,
+			     struct rte_flow_error *error);
 #ifdef __cplusplus
 }
 #endif
diff --git a/lib/librte_ethdev/rte_flow_driver.h b/lib/librte_ethdev/rte_flow_driver.h
index 881cc469b7..ad1d7a2cdc 100644
--- a/lib/librte_ethdev/rte_flow_driver.h
+++ b/lib/librte_ethdev/rte_flow_driver.h
@@ -107,6 +107,38 @@  struct rte_flow_ops {
 		 void **context,
 		 uint32_t nb_contexts,
 		 struct rte_flow_error *err);
+	/** See rte_flow_tunnel_decap_set() */
+	int (*tunnel_decap_set)
+		(struct rte_eth_dev *dev,
+		 struct rte_flow_tunnel *tunnel,
+		 struct rte_flow_action **pmd_actions,
+		 uint32_t *num_of_actions,
+		 struct rte_flow_error *err);
+	/** See rte_flow_tunnel_match() */
+	int (*tunnel_match)
+		(struct rte_eth_dev *dev,
+		 struct rte_flow_tunnel *tunnel,
+		 struct rte_flow_item **pmd_items,
+		 uint32_t *num_of_items,
+		 struct rte_flow_error *err);
+	/** See rte_flow_get_rte_flow_restore_info() */
+	int (*get_restore_info)
+		(struct rte_eth_dev *dev,
+		 struct rte_mbuf *m,
+		 struct rte_flow_restore_info *info,
+		 struct rte_flow_error *err);
+	/** See rte_flow_action_tunnel_decap_release() */
+	int (*action_release)
+		(struct rte_eth_dev *dev,
+		 struct rte_flow_action *pmd_actions,
+		 uint32_t num_of_actions,
+		 struct rte_flow_error *err);
+	/** See rte_flow_item_release() */
+	int (*item_release)
+		(struct rte_eth_dev *dev,
+		 struct rte_flow_item *pmd_items,
+		 uint32_t num_of_items,
+		 struct rte_flow_error *err);
 };
 
 /**