From: Kiran Kumar K <kirankum...@marvell.com>
Add new rte_flow_item_nsh in order to match the network service header
based on RFC 8300.
Signed-off-by: Kiran Kumar K <kirankum...@marvell.com>
---
V2 changes:
* updated supported items in doc
doc/guides/prog_guide/rte_flow.rst | 18 ++++++++++++++
lib/librte_ethdev/rte_flow.c | 1 +
lib/librte_ethdev/rte_flow.h | 39 ++++++++++++++++++++++++++++++
3 files changed, 58 insertions(+)
diff --git a/doc/guides/prog_guide/rte_flow.rst
b/doc/guides/prog_guide/rte_flow.rst
index 821b524b3..c3cdf5be9 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -1219,6 +1219,24 @@ Matches an application specific 32 bit metadata item.
| ``mask`` | ``data`` | bit-mask applies to "spec" and "last" |
+----------+----------+---------------------------------------+
+Item: ``NSH``
+^^^^^^^^^^^^^^^^^^^
+
+Matches a network service header (RFC 8300).
+
+- ``version``: normally 0x0 (2 bits).
+- ``oam_pkt``: indicate oam packet (1 bit).
+- ``reserved``: reserved bit (1 bit).
+- ``ttl``: maxium SFF hopes (6 bits).
+- ``length``: total length in 4 bytes words (6 bits).
+- ``reserved1``: reserved1 bits (4 bits).
+- ``mdtype``: ndicates format of NSH header (4 bits).
+- ``next_proto``: indicates protocol type of encap data (8 bits).
+- ``spi``: service path identifier (3 bytes).
+- ``sindex``: service index (1 byte).
+- Default ``mask`` matches mdtype, next_proto, spi, sindex.
+
+
Actions
~~~~~~~
diff --git a/lib/librte_ethdev/rte_flow.c b/lib/librte_ethdev/rte_flow.c
index 18fcb018e..39646167c 100644
--- a/lib/librte_ethdev/rte_flow.c
+++ b/lib/librte_ethdev/rte_flow.c
@@ -75,6 +75,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] =
{
MK_FLOW_ITEM(MARK, sizeof(struct rte_flow_item_mark)),
MK_FLOW_ITEM(META, sizeof(struct rte_flow_item_meta)),
MK_FLOW_ITEM(GRE_KEY, sizeof(rte_be32_t)),
+ MK_FLOW_ITEM(NSH, sizeof(struct rte_flow_item_nsh)),
};
/** Generate flow_action[] entry. */
diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
index b66bf1495..f0e99fa3e 100644
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h
@@ -434,6 +434,13 @@ enum rte_flow_item_type {
* @code rte_be32_t * @endcode
*/
RTE_FLOW_ITEM_TYPE_GRE_KEY,
+
+ /**
+ * Matches Network service header (NSH).
+ * See struct rte_flow_item_nsh.
+ *
+ */
+ RTE_FLOW_ITEM_TYPE_NSH,
};
/**
@@ -1214,6 +1221,38 @@ struct rte_flow_item_mark {
uint32_t id; /**< Integer value to match against. */
};
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ *
+ * RTE_FLOW_ITEM_TYPE_NSH
+ *
+ * Match network service header (NSH), RFC 8300
+ *
+ */
+struct rte_flow_item_nsh {
+ uint32_t version:2;
+ uint32_t oam_pkt:1;
+ uint32_t reserved:1;
+ uint32_t ttl:6;
+ uint32_t length:6;
+ uint32_t reserved1:4;
+ uint32_t mdtype:4;
+ uint32_t next_proto:8;
+ uint32_t spi:24;
+ uint32_t sindex:8;
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_NSH. */
+#ifndef __cplusplus
+static const struct rte_flow_item_nsh rte_flow_item_nsh_mask = {
+ .mdtype = 0xf,
+ .next_proto = 0xff,
+ .spi = 0xffffff,
+ .sindex = 0xff,
+};
+#endif
+
/**
* Matching pattern item definition.
*
--
2.17.1
