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ethdev: add actions to modify TCP header fields

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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>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
This commit is contained in:
Dekel Peled 2019-07-02 17:44:26 +03:00 committed by Ferruh Yigit
parent 55d8f0d35f
commit 5dca85377e
3 changed files with 92 additions and 0 deletions
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32
doc/guides/prog_guide/rte_flow.rst
View File

@ -2345,6 +2345,38 @@ 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
~~~~~~~~~~~~~~

4
lib/librte_ethdev/rte_flow.c
View File

@ -143,6 +143,10 @@ static const struct rte_flow_desc_data rte_flow_desc_action[] = {
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

56
lib/librte_ethdev/rte_flow.h
View File

@ -1650,6 +1650,62 @@ 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,
};
/**