[dpdk-dev] [PATCH v9 1/3] ethdev: add actions to modify TCP header fields
From: Dekel Peled <hidden>
Date: 2019-07-01 15:45:11
Subsystem:
library code, the rest · Maintainers:
Andrew Morton, Linus Torvalds
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/55773/ Signed-off-by: Dekel Peled <redacted> Acked-by: Andrew Rybchenko <redacted> --- doc/guides/prog_guide/rte_flow.rst | 32 ++++++++++++++++++++++++++++++++ lib/librte_ethdev/rte_flow.c | 4 ++++ lib/librte_ethdev/rte_flow.h | 32 ++++++++++++++++++++++++++++++++ 3 files changed, 68 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..28445f4 100644
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h@@ -1651,6 +1651,38 @@ 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. + * + * 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. + * + * 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. + * + * 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. + * + * Using this action on non-matching traffic will result in + * undefined behavior. + */ + RTE_FLOW_ACTION_TYPE_DEC_TCP_ACK, }; /**
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1.8.3.1