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From: Dekel Peled <dekelp@mellanox.com>
To: adrien.mazarguil@6wind.com, wenzhuo.lu@intel.com, jingjing.wu@intel.com,
bernard.iremonger@intel.com, yskoh@mellanox.com, shahafs@mellanox.com,
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Cc: dev@dpdk.org, orika@mellanox.com
Date: Tue, 2 Jul 2019 17:44:26 +0300
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<cover.1562078184.git.dekelp@mellanox.com>
Subject: [dpdk-dev] [PATCH v10 1/3] ethdev: add actions to modify TCP header
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Add actions:
- INC_TCP_SEQ - Increase sequence number in the outermost TCP header.
- DEC_TCP_SEQ - Decrease sequence number in the outermost TCP header.
- INC_TCP_ACK - Increase acknowledgment number in the outermost TCP
header.
- DEC_TCP_ACK - Decrease acknowledgment number in the outermost TCP
header.
Original work by Xiaoyu Min.
This patch uses the new approach introduced by [1], using a simple
integer instead of using an action-specific structure for each of
the new actions.
[1] http://patches.dpdk.org/patch/55882/
Signed-off-by: Dekel Peled <dekelp@mellanox.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
doc/guides/prog_guide/rte_flow.rst | 32 ++++++++++++++++++++++
lib/librte_ethdev/rte_flow.c | 4 +++
lib/librte_ethdev/rte_flow.h | 56 ++++++++++++++++++++++++++++++++++++++
3 files changed, 92 insertions(+)
diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 67deed7..bbe32db 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -2346,6 +2346,38 @@ Otherwise, RTE_FLOW_ERROR_TYPE_ACTION error will be returned.
| ``mac_addr`` | MAC address |
+--------------+---------------+
+Action: ``INC_TCP_SEQ``
+^^^^^^^^^^^^^^^^^^^^^^^
+
+Increase sequence number in the outermost TCP header.
+Value to increase TCP sequence number by is a big-endian 32 bit integer.
+
+Using this action on non-matching traffic will result in undefined behavior.
+
+Action: ``DEC_TCP_SEQ``
+^^^^^^^^^^^^^^^^^^^^^^^
+
+Decrease sequence number in the outermost TCP header.
+Value to decrease TCP sequence number by is a big-endian 32 bit integer.
+
+Using this action on non-matching traffic will result in undefined behavior.
+
+Action: ``INC_TCP_ACK``
+^^^^^^^^^^^^^^^^^^^^^^^
+
+Increase acknowledgment number in the outermost TCP header.
+Value to increase TCP acknowledgment number by is a big-endian 32 bit integer.
+
+Using this action on non-matching traffic will result in undefined behavior.
+
+Action: ``DEC_TCP_ACK``
+^^^^^^^^^^^^^^^^^^^^^^^
+
+Decrease acknowledgment number in the outermost TCP header.
+Value to decrease TCP acknowledgment number by is a big-endian 32 bit integer.
+
+Using this action on non-matching traffic will result in undefined behavior.
+
Negative types
~~~~~~~~~~~~~~
diff --git a/lib/librte_ethdev/rte_flow.c b/lib/librte_ethdev/rte_flow.c
index 3277be1..0c9f6c6 100644
--- a/lib/librte_ethdev/rte_flow.c
+++ b/lib/librte_ethdev/rte_flow.c
@@ -143,6 +143,10 @@ struct rte_flow_desc_data {
MK_FLOW_ACTION(SET_TTL, sizeof(struct rte_flow_action_set_ttl)),
MK_FLOW_ACTION(SET_MAC_SRC, sizeof(struct rte_flow_action_set_mac)),
MK_FLOW_ACTION(SET_MAC_DST, sizeof(struct rte_flow_action_set_mac)),
+ MK_FLOW_ACTION(INC_TCP_SEQ, sizeof(rte_be32_t)),
+ MK_FLOW_ACTION(DEC_TCP_SEQ, sizeof(rte_be32_t)),
+ MK_FLOW_ACTION(INC_TCP_ACK, sizeof(rte_be32_t)),
+ MK_FLOW_ACTION(DEC_TCP_ACK, sizeof(rte_be32_t)),
};
static int
diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
index 2232856..bc41023 100644
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h
@@ -1651,6 +1651,62 @@ enum rte_flow_action_type {
* See struct rte_flow_action_set_mac.
*/
RTE_FLOW_ACTION_TYPE_SET_MAC_DST,
+
+ /**
+ * Increase sequence number in the outermost TCP header.
+ *
+ * Action configuration specifies the value to increase
+ * TCP sequence number as a big-endian 32 bit integer.
+ *
+ * @p conf type:
+ * @code rte_be32_t * @endcode
+ *
+ * Using this action on non-matching traffic will result in
+ * undefined behavior.
+ */
+ RTE_FLOW_ACTION_TYPE_INC_TCP_SEQ,
+
+ /**
+ * Decrease sequence number in the outermost TCP header.
+ *
+ * Action configuration specifies the value to decrease
+ * TCP sequence number as a big-endian 32 bit integer.
+ *
+ * @p conf type:
+ * @code rte_be32_t * @endcode
+ *
+ * Using this action on non-matching traffic will result in
+ * undefined behavior.
+ */
+ RTE_FLOW_ACTION_TYPE_DEC_TCP_SEQ,
+
+ /**
+ * Increase acknowledgment number in the outermost TCP header.
+ *
+ * Action configuration specifies the value to increase
+ * TCP acknowledgment number as a big-endian 32 bit integer.
+ *
+ * @p conf type:
+ * @code rte_be32_t * @endcode
+
+ * Using this action on non-matching traffic will result in
+ * undefined behavior.
+ */
+ RTE_FLOW_ACTION_TYPE_INC_TCP_ACK,
+
+ /**
+ * Decrease acknowledgment number in the outermost TCP header.
+ *
+ * Action configuration specifies the value to decrease
+ * TCP acknowledgment number as a big-endian 32 bit integer.
+ *
+ * @p conf type:
+ * @code rte_be32_t * @endcode
+ *
+ * Using this action on non-matching traffic will result in
+ * undefined behavior.
+ */
+ RTE_FLOW_ACTION_TYPE_DEC_TCP_ACK,
};
/**
--
1.8.3.1