[2/3] app/testpmd: add actions to modify TCP header fields

Message ID 1553177917-43297-3-git-send-email-dekelp@mellanox.com
State Superseded, archived
Delegated to: Ferruh Yigit
Headers show
Series
  • add actions to modify header fields
Related show

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Dekel Peled March 21, 2019, 2:18 p.m.
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.

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
---
 app/test-pmd/cmdline_flow.c                 | 100 ++++++++++++++++++++++++++++
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  16 +++++
 2 files changed, 116 insertions(+)

Comments

Adrien Mazarguil March 29, 2019, 1:58 p.m. | #1
On Thu, Mar 21, 2019 at 04:18:36PM +0200, Dekel Peled wrote:
> 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.
> 
> Signed-off-by: Dekel Peled <dekelp@mellanox.com>

I suggest to merge this patch into the previous one. No reason for testpmd
to be updated separately.

Some comments below.

> ---
>  app/test-pmd/cmdline_flow.c                 | 100 ++++++++++++++++++++++++++++
>  doc/guides/testpmd_app_ug/testpmd_funcs.rst |  16 +++++
>  2 files changed, 116 insertions(+)
> 
> diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
> index 36659a6..5cd4ceb 100644
> --- a/app/test-pmd/cmdline_flow.c
> +++ b/app/test-pmd/cmdline_flow.c
> @@ -271,6 +271,14 @@ enum index {
>  	ACTION_SET_MAC_SRC_MAC_SRC,
>  	ACTION_SET_MAC_DST,
>  	ACTION_SET_MAC_DST_MAC_DST,
> +	ACTION_INC_TCP_SEQ,
> +	ACTION_INC_TCP_SEQ_VALUE,
> +	ACTION_DEC_TCP_SEQ,
> +	ACTION_DEC_TCP_SEQ_VALUE,
> +	ACTION_INC_TCP_ACK,
> +	ACTION_INC_TCP_ACK_VALUE,
> +	ACTION_DEC_TCP_ACK,
> +	ACTION_DEC_TCP_ACK_VALUE,
>  };
>  
>  /** Maximum size for pattern in struct rte_flow_item_raw. */
> @@ -884,6 +892,10 @@ struct parse_action_priv {
>  	ACTION_SET_TTL,
>  	ACTION_SET_MAC_SRC,
>  	ACTION_SET_MAC_DST,
> +	ACTION_INC_TCP_SEQ,
> +	ACTION_DEC_TCP_SEQ,
> +	ACTION_INC_TCP_ACK,
> +	ACTION_DEC_TCP_ACK,
>  	ZERO,
>  };
>  
> @@ -1046,6 +1058,30 @@ struct parse_action_priv {
>  	ZERO,
>  };
>  
> +static const enum index action_inc_tcp_seq[] = {
> +	ACTION_INC_TCP_SEQ_VALUE,
> +	ACTION_NEXT,
> +	ZERO,
> +};
> +
> +static const enum index action_dec_tcp_seq[] = {
> +	ACTION_DEC_TCP_SEQ_VALUE,
> +	ACTION_NEXT,
> +	ZERO,
> +};
> +
> +static const enum index action_inc_tcp_ack[] = {
> +	ACTION_INC_TCP_ACK_VALUE,
> +	ACTION_NEXT,
> +	ZERO,
> +};
> +
> +static const enum index action_dec_tcp_ack[] = {
> +	ACTION_DEC_TCP_ACK_VALUE,
> +	ACTION_NEXT,
> +	ZERO,
> +};
> +
>  static int parse_init(struct context *, const struct token *,
>  		      const char *, unsigned int,
>  		      void *, unsigned int);
> @@ -2843,6 +2879,70 @@ static int comp_vc_action_rss_queue(struct context *, const struct token *,
>  			     (struct rte_flow_action_set_mac, mac_addr)),
>  		.call = parse_vc_conf,
>  	},
> +	[ACTION_INC_TCP_SEQ] = {
> +		.name = "inc_tcp_seq",
> +		.help = "increase TCP sequence number",
> +		.priv = PRIV_ACTION(INC_TCP_SEQ,
> +			sizeof(struct rte_flow_action_modify_tcp_seq)),
> +		.next = NEXT(action_inc_tcp_seq),
> +		.call = parse_vc,
> +	},
> +	[ACTION_INC_TCP_SEQ_VALUE] = {
> +		.name = "value",
> +		.help = "the value to increase TCP sequence number by",
> +		.next = NEXT(action_inc_tcp_seq, NEXT_ENTRY(UNSIGNED)),
> +		.args = ARGS(ARGS_ENTRY_HTON
> +			(struct rte_flow_action_modify_tcp_seq, value)),

You may need to remove HTON here depending on the chosen endian for the
API, see my comments on previous patch.

> +		.call = parse_vc_conf,
> +	},
> +	[ACTION_DEC_TCP_SEQ] = {
> +		.name = "dec_tcp_seq",
> +		.help = "decrease TCP sequence number",
> +		.priv = PRIV_ACTION(DEC_TCP_SEQ,
> +			sizeof(struct rte_flow_action_modify_tcp_seq)),
> +		.next = NEXT(action_dec_tcp_seq),
> +		.call = parse_vc,
> +	},
> +	[ACTION_DEC_TCP_SEQ_VALUE] = {
> +		.name = "value",
> +		.help = "the value to decrease TCP sequence number by",
> +		.next = NEXT(action_dec_tcp_seq, NEXT_ENTRY(UNSIGNED)),
> +		.args = ARGS(ARGS_ENTRY_HTON
> +			(struct rte_flow_action_modify_tcp_seq, value)),

Same here.

> +		.call = parse_vc_conf,
> +	},
> +	[ACTION_INC_TCP_ACK] = {
> +		.name = "inc_tcp_ack",
> +		.help = "increase TCP acknowledgment number",
> +		.priv = PRIV_ACTION(INC_TCP_ACK,
> +			sizeof(struct rte_flow_action_modify_tcp_ack)),
> +		.next = NEXT(action_inc_tcp_ack),
> +		.call = parse_vc,
> +	},
> +	[ACTION_INC_TCP_ACK_VALUE] = {
> +		.name = "value",
> +		.help = "the value to increase TCP acknowledgment number by",
> +		.next = NEXT(action_inc_tcp_ack, NEXT_ENTRY(UNSIGNED)),
> +		.args = ARGS(ARGS_ENTRY_HTON
> +			(struct rte_flow_action_modify_tcp_ack, value)),

Ditto.

> +		.call = parse_vc_conf,
> +	},
> +	[ACTION_DEC_TCP_ACK] = {
> +		.name = "dec_tcp_ack",
> +		.help = "decrease TCP acknowledgment number",
> +		.priv = PRIV_ACTION(DEC_TCP_ACK,
> +			sizeof(struct rte_flow_action_modify_tcp_ack)),
> +		.next = NEXT(action_dec_tcp_ack),
> +		.call = parse_vc,
> +	},
> +	[ACTION_DEC_TCP_ACK_VALUE] = {
> +		.name = "value",
> +		.help = "the value to decrease TCP acknowledgment number by",
> +		.next = NEXT(action_dec_tcp_ack, NEXT_ENTRY(UNSIGNED)),
> +		.args = ARGS(ARGS_ENTRY_HTON
> +			(struct rte_flow_action_modify_tcp_ack, value)),

Ditto.

> +		.call = parse_vc_conf,
> +	},
>  };
>  
>  /** Remove and return last entry from argument stack. */
> diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> index 1a12da4..c6f8b2c 100644
> --- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> +++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> @@ -3961,6 +3961,22 @@ This section lists supported actions and their attributes, if any.
>  
>    - ``mac_addr {MAC-48}``: new destination MAC address
>  
> +- ``inc_tcp_seq``: Increase sequence number in the outermost TCP header
> +
> +  - ``value {unsigned}``: Value to increase TCP sequence number by
> +
> +- ``dec_tcp_seq``: Decrease sequence number in the outermost TCP header
> +
> +  - ``value {unsigned}``: Value to decrease TCP sequence number by
> +
> +- ``inc_tcp_ack``: Increase acknowledgment number in the outermost TCP header
> +
> +  - ``value {unsigned}``: Value to increase TCP acknowledgment number by
> +
> +- ``dec_tcp_ack``: Decrease acknowledgment number in the outermost TCP header
> +
> +  - ``value {unsigned}``: Value to decrease TCP acknowledgment number by

Please add missing "." to each line.

> +
>  Destroying flow rules
>  ~~~~~~~~~~~~~~~~~~~~~
>  
> -- 
> 1.8.3.1
>
Dekel Peled March 31, 2019, 1:10 p.m. | #2
Thanks, PSB.

> -----Original Message-----
> From: Adrien Mazarguil <adrien.mazarguil@6wind.com>
> Sent: Friday, March 29, 2019 4:59 PM
> To: Dekel Peled <dekelp@mellanox.com>
> Cc: wenzhuo.lu@intel.com; jingjing.wu@intel.com;
> bernard.iremonger@intel.com; Yongseok Koh <yskoh@mellanox.com>;
> Shahaf Shuler <shahafs@mellanox.com>; dev@dpdk.org; Ori Kam
> <orika@mellanox.com>
> Subject: Re: [PATCH 2/3] app/testpmd: add actions to modify TCP header
> fields
> 
> On Thu, Mar 21, 2019 at 04:18:36PM +0200, Dekel Peled wrote:
> > 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.
> >
> > Signed-off-by: Dekel Peled <dekelp@mellanox.com>
> 
> I suggest to merge this patch into the previous one. No reason for testpmd
> to be updated separately.
> 

I prefer it in separate patch since it is part of different SW module.

> Some comments below.
> 
> > ---
> >  app/test-pmd/cmdline_flow.c                 | 100
> ++++++++++++++++++++++++++++
> >  doc/guides/testpmd_app_ug/testpmd_funcs.rst |  16 +++++
> >  2 files changed, 116 insertions(+)
> >
> > diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
> > index 36659a6..5cd4ceb 100644
> > --- a/app/test-pmd/cmdline_flow.c
> > +++ b/app/test-pmd/cmdline_flow.c
> > @@ -271,6 +271,14 @@ enum index {
> >  	ACTION_SET_MAC_SRC_MAC_SRC,
> >  	ACTION_SET_MAC_DST,
> >  	ACTION_SET_MAC_DST_MAC_DST,
> > +	ACTION_INC_TCP_SEQ,
> > +	ACTION_INC_TCP_SEQ_VALUE,
> > +	ACTION_DEC_TCP_SEQ,
> > +	ACTION_DEC_TCP_SEQ_VALUE,
> > +	ACTION_INC_TCP_ACK,
> > +	ACTION_INC_TCP_ACK_VALUE,
> > +	ACTION_DEC_TCP_ACK,
> > +	ACTION_DEC_TCP_ACK_VALUE,
> >  };
> >
> >  /** Maximum size for pattern in struct rte_flow_item_raw. */ @@
> > -884,6 +892,10 @@ struct parse_action_priv {
> >  	ACTION_SET_TTL,
> >  	ACTION_SET_MAC_SRC,
> >  	ACTION_SET_MAC_DST,
> > +	ACTION_INC_TCP_SEQ,
> > +	ACTION_DEC_TCP_SEQ,
> > +	ACTION_INC_TCP_ACK,
> > +	ACTION_DEC_TCP_ACK,
> >  	ZERO,
> >  };
> >
> > @@ -1046,6 +1058,30 @@ struct parse_action_priv {
> >  	ZERO,
> >  };
> >
> > +static const enum index action_inc_tcp_seq[] = {
> > +	ACTION_INC_TCP_SEQ_VALUE,
> > +	ACTION_NEXT,
> > +	ZERO,
> > +};
> > +
> > +static const enum index action_dec_tcp_seq[] = {
> > +	ACTION_DEC_TCP_SEQ_VALUE,
> > +	ACTION_NEXT,
> > +	ZERO,
> > +};
> > +
> > +static const enum index action_inc_tcp_ack[] = {
> > +	ACTION_INC_TCP_ACK_VALUE,
> > +	ACTION_NEXT,
> > +	ZERO,
> > +};
> > +
> > +static const enum index action_dec_tcp_ack[] = {
> > +	ACTION_DEC_TCP_ACK_VALUE,
> > +	ACTION_NEXT,
> > +	ZERO,
> > +};
> > +
> >  static int parse_init(struct context *, const struct token *,
> >  		      const char *, unsigned int,
> >  		      void *, unsigned int);
> > @@ -2843,6 +2879,70 @@ static int comp_vc_action_rss_queue(struct
> context *, const struct token *,
> >  			     (struct rte_flow_action_set_mac, mac_addr)),
> >  		.call = parse_vc_conf,
> >  	},
> > +	[ACTION_INC_TCP_SEQ] = {
> > +		.name = "inc_tcp_seq",
> > +		.help = "increase TCP sequence number",
> > +		.priv = PRIV_ACTION(INC_TCP_SEQ,
> > +			sizeof(struct rte_flow_action_modify_tcp_seq)),
> > +		.next = NEXT(action_inc_tcp_seq),
> > +		.call = parse_vc,
> > +	},
> > +	[ACTION_INC_TCP_SEQ_VALUE] = {
> > +		.name = "value",
> > +		.help = "the value to increase TCP sequence number by",
> > +		.next = NEXT(action_inc_tcp_seq, NEXT_ENTRY(UNSIGNED)),
> > +		.args = ARGS(ARGS_ENTRY_HTON
> > +			(struct rte_flow_action_modify_tcp_seq, value)),
> 
> You may need to remove HTON here depending on the chosen endian for
> the API, see my comments on previous patch.
> 
> > +		.call = parse_vc_conf,
> > +	},
> > +	[ACTION_DEC_TCP_SEQ] = {
> > +		.name = "dec_tcp_seq",
> > +		.help = "decrease TCP sequence number",
> > +		.priv = PRIV_ACTION(DEC_TCP_SEQ,
> > +			sizeof(struct rte_flow_action_modify_tcp_seq)),
> > +		.next = NEXT(action_dec_tcp_seq),
> > +		.call = parse_vc,
> > +	},
> > +	[ACTION_DEC_TCP_SEQ_VALUE] = {
> > +		.name = "value",
> > +		.help = "the value to decrease TCP sequence number by",
> > +		.next = NEXT(action_dec_tcp_seq,
> NEXT_ENTRY(UNSIGNED)),
> > +		.args = ARGS(ARGS_ENTRY_HTON
> > +			(struct rte_flow_action_modify_tcp_seq, value)),
> 
> Same here.
> 
> > +		.call = parse_vc_conf,
> > +	},
> > +	[ACTION_INC_TCP_ACK] = {
> > +		.name = "inc_tcp_ack",
> > +		.help = "increase TCP acknowledgment number",
> > +		.priv = PRIV_ACTION(INC_TCP_ACK,
> > +			sizeof(struct rte_flow_action_modify_tcp_ack)),
> > +		.next = NEXT(action_inc_tcp_ack),
> > +		.call = parse_vc,
> > +	},
> > +	[ACTION_INC_TCP_ACK_VALUE] = {
> > +		.name = "value",
> > +		.help = "the value to increase TCP acknowledgment number
> by",
> > +		.next = NEXT(action_inc_tcp_ack, NEXT_ENTRY(UNSIGNED)),
> > +		.args = ARGS(ARGS_ENTRY_HTON
> > +			(struct rte_flow_action_modify_tcp_ack, value)),
> 
> Ditto.
> 
> > +		.call = parse_vc_conf,
> > +	},
> > +	[ACTION_DEC_TCP_ACK] = {
> > +		.name = "dec_tcp_ack",
> > +		.help = "decrease TCP acknowledgment number",
> > +		.priv = PRIV_ACTION(DEC_TCP_ACK,
> > +			sizeof(struct rte_flow_action_modify_tcp_ack)),
> > +		.next = NEXT(action_dec_tcp_ack),
> > +		.call = parse_vc,
> > +	},
> > +	[ACTION_DEC_TCP_ACK_VALUE] = {
> > +		.name = "value",
> > +		.help = "the value to decrease TCP acknowledgment number
> by",
> > +		.next = NEXT(action_dec_tcp_ack,
> NEXT_ENTRY(UNSIGNED)),
> > +		.args = ARGS(ARGS_ENTRY_HTON
> > +			(struct rte_flow_action_modify_tcp_ack, value)),
> 
> Ditto.
> 
> > +		.call = parse_vc_conf,
> > +	},
> >  };
> >
> >  /** Remove and return last entry from argument stack. */ diff --git
> > a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> > b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> > index 1a12da4..c6f8b2c 100644
> > --- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> > +++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> > @@ -3961,6 +3961,22 @@ This section lists supported actions and their
> attributes, if any.
> >
> >    - ``mac_addr {MAC-48}``: new destination MAC address
> >
> > +- ``inc_tcp_seq``: Increase sequence number in the outermost TCP
> > +header
> > +
> > +  - ``value {unsigned}``: Value to increase TCP sequence number by
> > +
> > +- ``dec_tcp_seq``: Decrease sequence number in the outermost TCP
> > +header
> > +
> > +  - ``value {unsigned}``: Value to decrease TCP sequence number by
> > +
> > +- ``inc_tcp_ack``: Increase acknowledgment number in the outermost
> > +TCP header
> > +
> > +  - ``value {unsigned}``: Value to increase TCP acknowledgment number
> > + by
> > +
> > +- ``dec_tcp_ack``: Decrease acknowledgment number in the outermost
> > +TCP header
> > +
> > +  - ``value {unsigned}``: Value to decrease TCP acknowledgment number
> > + by
> 
> Please add missing "." to each line.

Will add.

> 
> > +
> >  Destroying flow rules
> >  ~~~~~~~~~~~~~~~~~~~~~
> >
> > --
> > 1.8.3.1
> >
> 
> --
> Adrien Mazarguil
> 6WIND

Patch

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 36659a6..5cd4ceb 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -271,6 +271,14 @@  enum index {
 	ACTION_SET_MAC_SRC_MAC_SRC,
 	ACTION_SET_MAC_DST,
 	ACTION_SET_MAC_DST_MAC_DST,
+	ACTION_INC_TCP_SEQ,
+	ACTION_INC_TCP_SEQ_VALUE,
+	ACTION_DEC_TCP_SEQ,
+	ACTION_DEC_TCP_SEQ_VALUE,
+	ACTION_INC_TCP_ACK,
+	ACTION_INC_TCP_ACK_VALUE,
+	ACTION_DEC_TCP_ACK,
+	ACTION_DEC_TCP_ACK_VALUE,
 };
 
 /** Maximum size for pattern in struct rte_flow_item_raw. */
@@ -884,6 +892,10 @@  struct parse_action_priv {
 	ACTION_SET_TTL,
 	ACTION_SET_MAC_SRC,
 	ACTION_SET_MAC_DST,
+	ACTION_INC_TCP_SEQ,
+	ACTION_DEC_TCP_SEQ,
+	ACTION_INC_TCP_ACK,
+	ACTION_DEC_TCP_ACK,
 	ZERO,
 };
 
@@ -1046,6 +1058,30 @@  struct parse_action_priv {
 	ZERO,
 };
 
+static const enum index action_inc_tcp_seq[] = {
+	ACTION_INC_TCP_SEQ_VALUE,
+	ACTION_NEXT,
+	ZERO,
+};
+
+static const enum index action_dec_tcp_seq[] = {
+	ACTION_DEC_TCP_SEQ_VALUE,
+	ACTION_NEXT,
+	ZERO,
+};
+
+static const enum index action_inc_tcp_ack[] = {
+	ACTION_INC_TCP_ACK_VALUE,
+	ACTION_NEXT,
+	ZERO,
+};
+
+static const enum index action_dec_tcp_ack[] = {
+	ACTION_DEC_TCP_ACK_VALUE,
+	ACTION_NEXT,
+	ZERO,
+};
+
 static int parse_init(struct context *, const struct token *,
 		      const char *, unsigned int,
 		      void *, unsigned int);
@@ -2843,6 +2879,70 @@  static int comp_vc_action_rss_queue(struct context *, const struct token *,
 			     (struct rte_flow_action_set_mac, mac_addr)),
 		.call = parse_vc_conf,
 	},
+	[ACTION_INC_TCP_SEQ] = {
+		.name = "inc_tcp_seq",
+		.help = "increase TCP sequence number",
+		.priv = PRIV_ACTION(INC_TCP_SEQ,
+			sizeof(struct rte_flow_action_modify_tcp_seq)),
+		.next = NEXT(action_inc_tcp_seq),
+		.call = parse_vc,
+	},
+	[ACTION_INC_TCP_SEQ_VALUE] = {
+		.name = "value",
+		.help = "the value to increase TCP sequence number by",
+		.next = NEXT(action_inc_tcp_seq, NEXT_ENTRY(UNSIGNED)),
+		.args = ARGS(ARGS_ENTRY_HTON
+			(struct rte_flow_action_modify_tcp_seq, value)),
+		.call = parse_vc_conf,
+	},
+	[ACTION_DEC_TCP_SEQ] = {
+		.name = "dec_tcp_seq",
+		.help = "decrease TCP sequence number",
+		.priv = PRIV_ACTION(DEC_TCP_SEQ,
+			sizeof(struct rte_flow_action_modify_tcp_seq)),
+		.next = NEXT(action_dec_tcp_seq),
+		.call = parse_vc,
+	},
+	[ACTION_DEC_TCP_SEQ_VALUE] = {
+		.name = "value",
+		.help = "the value to decrease TCP sequence number by",
+		.next = NEXT(action_dec_tcp_seq, NEXT_ENTRY(UNSIGNED)),
+		.args = ARGS(ARGS_ENTRY_HTON
+			(struct rte_flow_action_modify_tcp_seq, value)),
+		.call = parse_vc_conf,
+	},
+	[ACTION_INC_TCP_ACK] = {
+		.name = "inc_tcp_ack",
+		.help = "increase TCP acknowledgment number",
+		.priv = PRIV_ACTION(INC_TCP_ACK,
+			sizeof(struct rte_flow_action_modify_tcp_ack)),
+		.next = NEXT(action_inc_tcp_ack),
+		.call = parse_vc,
+	},
+	[ACTION_INC_TCP_ACK_VALUE] = {
+		.name = "value",
+		.help = "the value to increase TCP acknowledgment number by",
+		.next = NEXT(action_inc_tcp_ack, NEXT_ENTRY(UNSIGNED)),
+		.args = ARGS(ARGS_ENTRY_HTON
+			(struct rte_flow_action_modify_tcp_ack, value)),
+		.call = parse_vc_conf,
+	},
+	[ACTION_DEC_TCP_ACK] = {
+		.name = "dec_tcp_ack",
+		.help = "decrease TCP acknowledgment number",
+		.priv = PRIV_ACTION(DEC_TCP_ACK,
+			sizeof(struct rte_flow_action_modify_tcp_ack)),
+		.next = NEXT(action_dec_tcp_ack),
+		.call = parse_vc,
+	},
+	[ACTION_DEC_TCP_ACK_VALUE] = {
+		.name = "value",
+		.help = "the value to decrease TCP acknowledgment number by",
+		.next = NEXT(action_dec_tcp_ack, NEXT_ENTRY(UNSIGNED)),
+		.args = ARGS(ARGS_ENTRY_HTON
+			(struct rte_flow_action_modify_tcp_ack, value)),
+		.call = parse_vc_conf,
+	},
 };
 
 /** Remove and return last entry from argument stack. */
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 1a12da4..c6f8b2c 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -3961,6 +3961,22 @@  This section lists supported actions and their attributes, if any.
 
   - ``mac_addr {MAC-48}``: new destination MAC address
 
+- ``inc_tcp_seq``: Increase sequence number in the outermost TCP header
+
+  - ``value {unsigned}``: Value to increase TCP sequence number by
+
+- ``dec_tcp_seq``: Decrease sequence number in the outermost TCP header
+
+  - ``value {unsigned}``: Value to decrease TCP sequence number by
+
+- ``inc_tcp_ack``: Increase acknowledgment number in the outermost TCP header
+
+  - ``value {unsigned}``: Value to increase TCP acknowledgment number by
+
+- ``dec_tcp_ack``: Decrease acknowledgment number in the outermost TCP header
+
+  - ``value {unsigned}``: Value to decrease TCP acknowledgment number by
+
 Destroying flow rules
 ~~~~~~~~~~~~~~~~~~~~~