[dpdk-dev] [PATCH v2 2/3] app/testpmd: add commands of modify TTL

[Xiaoyu Min <jackmin@mellanox.com>]

add commands which supports following TTL actions:
- RTE_FLOW_ACTION_TYPE_DEC_TTL
- RTE_FLOW_ACTION_TYPE_SET_TTL

Signed-off-by: Xiaoyu Min <jackmin@mellanox.com>
---
 app/test-pmd/cmdline_flow.c                 | 34 +++++++++++++++++++++
 app/test-pmd/config.c                       |  3 ++
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  5 +++
 3 files changed, 42 insertions(+)

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 3935539cb..fae825462 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -255,6 +255,9 @@ enum index {
 	ACTION_SET_TP_SRC_TP_SRC,
 	ACTION_SET_TP_DST,
 	ACTION_SET_TP_DST_TP_DST,
+	ACTION_DEC_TTL,
+	ACTION_SET_TTL,
+	ACTION_SET_TTL_TTL,
 };
 
 /** Maximum size for pattern in struct rte_flow_item_raw. */
@@ -834,6 +837,8 @@ static const enum index next_action[] = {
 	ACTION_SET_IPV6_DST,
 	ACTION_SET_TP_SRC,
 	ACTION_SET_TP_DST,
+	ACTION_DEC_TTL,
+	ACTION_SET_TTL,
 	ZERO,
 };
 
@@ -972,6 +977,12 @@ static const enum index action_set_tp_dst[] = {
 	ZERO,
 };
 
+static const enum index action_set_ttl[] = {
+	ACTION_SET_TTL_TTL,
+	ACTION_NEXT,
+	ZERO,
+};
+
 static const enum index action_jump[] = {
 	ACTION_JUMP_GROUP,
 	ACTION_NEXT,
@@ -2620,6 +2631,29 @@ static const struct token token_list[] = {
 			     (struct rte_flow_action_set_tp, port)),
 		.call = parse_vc_conf,
 	},
+	[ACTION_DEC_TTL] = {
+		.name = "dec_ttl",
+		.help = "decrease network TTL if available",
+		.priv = PRIV_ACTION(DEC_TTL, 0),
+		.next = NEXT(NEXT_ENTRY(ACTION_NEXT)),
+		.call = parse_vc,
+	},
+	[ACTION_SET_TTL] = {
+		.name = "set_ttl",
+		.help = "set ttl value",
+		.priv = PRIV_ACTION(SET_TTL,
+			sizeof(struct rte_flow_action_set_ttl)),
+		.next = NEXT(action_set_ttl),
+		.call = parse_vc,
+	},
+	[ACTION_SET_TTL_TTL] = {
+		.name = "ttl_value",
+		.help = "new ttl value to set",
+		.next = NEXT(action_set_ttl, NEXT_ENTRY(UNSIGNED)),
+		.args = ARGS(ARGS_ENTRY_HTON
+			     (struct rte_flow_action_set_ttl, ttl_value)),
+		.call = parse_vc_conf,
+	},
 };
 
 /** Remove and return last entry from argument stack. */
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index d1028d03e..d28b6ed14 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -1174,6 +1174,9 @@ static const struct {
 		       sizeof(struct rte_flow_action_set_tp)),
 	MK_FLOW_ACTION(SET_TP_DST,
 		       sizeof(struct rte_flow_action_set_tp)),
+	MK_FLOW_ACTION(DEC_TTL, 0),
+	MK_FLOW_ACTION(SET_TTL,
+		       sizeof(struct rte_flow_action_set_ttl)),
 };
 
 /** Compute storage space needed by action configuration and copy it. */
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index f60be0862..db68c4346 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -3721,6 +3721,11 @@ This section lists supported actions and their attributes, if any.
 
   - ``port``: New TCP/UDP destination port number.
 
+- ``dec_ttl``: Performs a decrease TTL value action
+
+- ``set_ttl``: Set TTL value with specificed value
+  - ``ttl_value {unsigned}``: The new TTL value to be set
+
 Destroying flow rules
 ~~~~~~~~~~~~~~~~~~~~~
 
-- 
2.17.1