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From: Michael Baum <michaelba@nvidia.com>
To: <dev@dpdk.org>
CC: Ori Kam <orika@nvidia.com>, Aman Singh <aman.deep.singh@intel.com>,
"Yuying Zhang" <yuying.zhang@intel.com>, Ferruh Yigit <ferruh.yigit@amd.com>,
"Thomas Monjalon" <thomas@monjalon.net>
Subject: [PATCH v1 1/2] ethdev: add random item support
Date: Tue, 22 Aug 2023 12:05:04 +0300
Message-ID: <20230822090505.3242455-2-michaelba@nvidia.com>
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Add support for a new item type "RTE_FLOW_ITEM_TYPE_RANDOM".
This item enables to match on some random value as a part of flow rule.
Signed-off-by: Michael Baum <michaelba@nvidia.com>
---
doc/guides/nics/features/default.ini | 1 +
doc/guides/prog_guide/rte_flow.rst | 11 +++++++++
doc/guides/rel_notes/release_23_11.rst | 4 ++++
lib/ethdev/rte_flow.c | 1 +
lib/ethdev/rte_flow.h | 33 ++++++++++++++++++++++++++
5 files changed, 50 insertions(+)
diff --git a/doc/guides/nics/features/default.ini b/doc/guides/nics/features/default.ini
index 2011e97127..0a790dafe8 100644
--- a/doc/guides/nics/features/default.ini
+++ b/doc/guides/nics/features/default.ini
@@ -139,6 +139,7 @@ pppoes =
pppoe_proto_id =
quota =
raw =
+random =
represented_port =
sctp =
tag =
diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 5bc998a433..5ad699dff7 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -1566,6 +1566,17 @@ Matches an InfiniBand base transport header in RoCE packet.
- ``hdr``: InfiniBand base transport header definition (``rte_ib.h``).
+Item: ``RANDOM``
+^^^^^^^^^^^^^^^^
+
+Matches a random value.
+
+This value is not based on the packet data/headers.
+Application shouldn't assume that this value is kept during the life time of
+the packet.
+
+- ``value``: Random value.
+
Actions
~~~~~~~
diff --git a/doc/guides/rel_notes/release_23_11.rst b/doc/guides/rel_notes/release_23_11.rst
index 4411bb32c1..1e90bf83e7 100644
--- a/doc/guides/rel_notes/release_23_11.rst
+++ b/doc/guides/rel_notes/release_23_11.rst
@@ -72,6 +72,10 @@ New Features
Also, make sure to start the actual text at the margin.
=======================================================
+* **Added flow matching of Infiniband BTH.**
+
+ Added ``RTE_FLOW_ITEM_RANDOM`` to match random value.
+
Removed Items
-------------
diff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c
index 271d854f78..51db3e5aec 100644
--- a/lib/ethdev/rte_flow.c
+++ b/lib/ethdev/rte_flow.c
@@ -136,6 +136,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = {
sizeof(struct rte_flow_item_icmp6_nd_opt_tla_eth)),
MK_FLOW_ITEM(MARK, sizeof(struct rte_flow_item_mark)),
MK_FLOW_ITEM(META, sizeof(struct rte_flow_item_meta)),
+ MK_FLOW_ITEM(RANDOM, sizeof(struct rte_flow_item_random)),
MK_FLOW_ITEM(TAG, sizeof(struct rte_flow_item_tag)),
MK_FLOW_ITEM(GRE_KEY, sizeof(rte_be32_t)),
MK_FLOW_ITEM(GRE_OPTION, sizeof(struct rte_flow_item_gre_opt)),
diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
index 2ebb76dbc0..b5228b293c 100644
--- a/lib/ethdev/rte_flow.h
+++ b/lib/ethdev/rte_flow.h
@@ -688,6 +688,19 @@ enum rte_flow_item_type {
* @see struct rte_flow_item_ib_bth.
*/
RTE_FLOW_ITEM_TYPE_IB_BTH,
+
+ /**
+ * [META]
+ *
+ * Matches a random value.
+ *
+ * This value is not based on the packet data/headers.
+ * Application shouldn't assume that this value is kept during the life
+ * time of the packet.
+ *
+ * @see struct rte_flow_item_random.
+ */
+ RTE_FLOW_ITEM_TYPE_RANDOM,
};
/**
@@ -2031,6 +2044,25 @@ static const struct rte_flow_item_ib_bth rte_flow_item_ib_bth_mask = {
};
#endif
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ *
+ * RTE_FLOW_ITEM_TYPE_RANDOM
+ *
+ * Matches a random value.
+ */
+struct rte_flow_item_random {
+ uint32_t value;
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_RANDOM. */
+#ifndef __cplusplus
+static const struct rte_flow_item_random rte_flow_item_random_mask = {
+ .value = UINT32_MAX,
+};
+#endif
+
/**
* Matching pattern item definition.
*
@@ -3875,6 +3907,7 @@ enum rte_flow_field_id {
RTE_FLOW_FIELD_GENEVE_OPT_CLASS,/**< GENEVE option class. */
RTE_FLOW_FIELD_GENEVE_OPT_DATA, /**< GENEVE option data. */
RTE_FLOW_FIELD_MPLS, /**< MPLS header. */
+ RTE_FLOW_FIELD_RANDOM /**< Random value. */
};
/**
--
2.25.1