From 5dca85377e1394ca6effdbad324cfb400b3a46b6 Mon Sep 17 00:00:00 2001 From: Dekel Peled Date: Tue, 2 Jul 2019 17:44:26 +0300 Subject: [PATCH] ethdev: add actions to modify TCP header fields 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 Acked-by: Andrew Rybchenko Acked-by: Viacheslav Ovsiienko Acked-by: Adrien Mazarguil --- 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 a34d012e55..a68121dc68 100644 --- a/doc/guides/prog_guide/rte_flow.rst +++ b/doc/guides/prog_guide/rte_flow.rst @@ -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 ~~~~~~~~~~~~~~ diff --git a/lib/librte_ethdev/rte_flow.c b/lib/librte_ethdev/rte_flow.c index 5c4952242f..0a83f53608 100644 --- a/lib/librte_ethdev/rte_flow.c +++ b/lib/librte_ethdev/rte_flow.c @@ -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 diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h index f3a8fb103f..7fc04d22b0 100644 --- a/lib/librte_ethdev/rte_flow.h +++ b/lib/librte_ethdev/rte_flow.h @@ -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, }; /** -- 2.20.1