[PATCH 0/2] enhance for DCB fwd-tc command

[PATCH 0/2] enhance for DCB fwd-tc command

[Chengwen Feng]

Add two commits for enhancing DCB fwd-tc command.

Chengwen Feng (2):
  app/testpmd: check whether start for DCB fwd-tc command
  app/testpmd: add show DCB fwd-tc command

 app/test-pmd/cmdline.c                      | 28 ++++++++++++++++++---
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  4 ++-
 2 files changed, 28 insertions(+), 4 deletions(-)

-- 
2.17.1

[PATCH 1/2] app/testpmd: check whether start for DCB fwd-tc command

[Chengwen Feng]

The 'set dcb fwd_tc xxx' and 'set dcb fwd_tc_cores xxx' commands should
check whether started forwarding, this patch add it.

Fixes: c58bdc7a589c ("app/testpmd: set DCB forwarding TCs")
Fixes: 945e9be0a803 ("app/testpmd: support multi-cores process one TC")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
---
 app/test-pmd/cmdline.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index c33c66f327..012a3ad32f 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -6241,6 +6241,10 @@ static void cmd_set_dcb_fwd_tc_parsed(void *parsed_result,
 {
 	struct cmd_set_dcb_fwd_tc_result *res = parsed_result;
 	int i;
+	if (test_done == 0) {
+		fprintf(stderr, "Please stop forwarding first\n");
+		return;
+	}
 	if (res->tc_mask == 0) {
 		fprintf(stderr, "TC mask should not be zero!\n");
 		return;
@@ -6293,6 +6297,10 @@ static void cmd_set_dcb_fwd_tc_cores_parsed(void *parsed_result,
 					    __rte_unused void *data)
 {
 	struct cmd_set_dcb_fwd_tc_cores_result *res = parsed_result;
+	if (test_done == 0) {
+		fprintf(stderr, "Please stop forwarding first\n");
+		return;
+	}
 	if (res->tc_cores == 0) {
 		fprintf(stderr, "Cores per-TC should not be zero!\n");
 		return;
-- 
2.17.1

[PATCH 2/2] app/testpmd: add show DCB fwd-tc command

[Chengwen Feng]

This commit adds "show config dcbfwdtc" command which show DCB
forwarding TC list and cores per-TC.

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
---
 app/test-pmd/cmdline.c                      | 20 +++++++++++++++++---
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  4 +++-
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 012a3ad32f..e9a1331071 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -195,7 +195,7 @@ static void cmd_help_long_parsed(void *parsed_result,
 			"show (rxq|txq) info (port_id) (queue_id)\n"
 			"    Display information for configured RX/TX queue.\n\n"
 
-			"show config (rxtx|cores|fwd|rxoffs|rxpkts|rxhdrs|txpkts)\n"
+			"show config (rxtx|cores|fwd|rxoffs|rxpkts|rxhdrs|txpkts|txtimes|dcbfwdtc)\n"
 			"    Display the given configuration.\n\n"
 
 			"read rxd (port_id) (queue_id) (rxd_id)\n"
@@ -6227,6 +6227,18 @@ static void cmd_set_fwd_retry_mode_init(void)
 	token_struct->string_data.str = token;
 }
 
+static void show_dcb_fwd_tc_config(void)
+{
+	int i;
+	printf("DCB forwarding TC list:");
+	for (i = 0; i < RTE_ETH_8_TCS; i++) {
+		if (dcb_fwd_tc_mask & (1u << i))
+			printf(" %d", i);
+	}
+	printf("\n");
+	printf("DCB forwarding cores per-TC: %u\n", dcb_fwd_tc_cores);
+}
+
 /* *** set DCB forward TCs *** */
 struct cmd_set_dcb_fwd_tc_result {
 	cmdline_fixed_string_t set;
@@ -7390,6 +7402,8 @@ static void cmd_showcfg_parsed(void *parsed_result,
 		show_tx_pkt_segments();
 	else if (!strcmp(res->what, "txtimes"))
 		show_tx_pkt_times();
+	else if (!strcmp(res->what, "dcbfwdtc"))
+		show_dcb_fwd_tc_config();
 }
 
 static cmdline_parse_token_string_t cmd_showcfg_show =
@@ -7398,12 +7412,12 @@ static cmdline_parse_token_string_t cmd_showcfg_port =
 	TOKEN_STRING_INITIALIZER(struct cmd_showcfg_result, cfg, "config");
 static cmdline_parse_token_string_t cmd_showcfg_what =
 	TOKEN_STRING_INITIALIZER(struct cmd_showcfg_result, what,
-				 "rxtx#cores#fwd#rxoffs#rxpkts#rxhdrs#txpkts#txtimes");
+				 "rxtx#cores#fwd#rxoffs#rxpkts#rxhdrs#txpkts#txtimes#dcbfwdtc");
 
 static cmdline_parse_inst_t cmd_showcfg = {
 	.f = cmd_showcfg_parsed,
 	.data = NULL,
-	.help_str = "show config rxtx|cores|fwd|rxoffs|rxpkts|rxhdrs|txpkts|txtimes",
+	.help_str = "show config rxtx|cores|fwd|rxoffs|rxpkts|rxhdrs|txpkts|txtimes|dcbfwdtc",
 	.tokens = {
 		(void *)&cmd_showcfg_show,
 		(void *)&cmd_showcfg_port,
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 62bb167d56..3c078578d8 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -297,7 +297,7 @@ show config
 Displays the configuration of the application.
 The configuration comes from the command-line, the runtime or the application defaults::
 
-   testpmd> show config (rxtx|cores|fwd|rxoffs|rxpkts|rxhdrs|txpkts|txtimes)
+   testpmd> show config (rxtx|cores|fwd|rxoffs|rxpkts|rxhdrs|txpkts|txtimes|dcbfwdtc)
 
 The available information categories are:
 
@@ -317,6 +317,8 @@ The available information categories are:
 
 * ``txtimes``: Burst time pattern for Tx only mode.
 
+* ``dcbfwdtc``: DCB forwarding TC-related configuration.
+
 For example:
 
 .. code-block:: console
-- 
2.17.1

Re: [PATCH 1/2] app/testpmd: check whether start for DCB fwd-tc command

[yangxingui]

On 2026/2/24 15:26, Chengwen Feng wrote:
> The 'set dcb fwd_tc xxx' and 'set dcb fwd_tc_cores xxx' commands should
> check whether started forwarding, this patch add it.
> 
> Fixes: c58bdc7a589c ("app/testpmd: set DCB forwarding TCs")
> Fixes: 945e9be0a803 ("app/testpmd: support multi-cores process one TC")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
> ---

Acked-by: Xingui Yang <yangxingui@huawei.com>

Re: [PATCH 2/2] app/testpmd: add show DCB fwd-tc command

[yangxingui]

On 2026/2/24 15:26, Chengwen Feng wrote:
> This commit adds "show config dcbfwdtc" command which show DCB
> forwarding TC list and cores per-TC.
> 
> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
> ---

Acked-by: Xingui Yang <yangxingui@huawei.com>

Re: [PATCH 0/2] enhance for DCB fwd-tc command

[Stephen Hemminger]

On Tue, 24 Feb 2026 15:26:45 +0800
Chengwen Feng <fengchengwen@huawei.com> wrote:

> Add two commits for enhancing DCB fwd-tc command.
> 
> Chengwen Feng (2):
>   app/testpmd: check whether start for DCB fwd-tc command
>   app/testpmd: add show DCB fwd-tc command
> 
>  app/test-pmd/cmdline.c                      | 28 ++++++++++++++++++---
>  doc/guides/testpmd_app_ug/testpmd_funcs.rst |  4 ++-
>  2 files changed, 28 insertions(+), 4 deletions(-)
> 


Straightforward and contained to small area in testpmd.

Applied to next-net