[PATCH 1/1] ethdev: add link speed 800G

[PATCH 1/1] ethdev: add link speed 800G

[Thomas Monjalon]

There are some devices supporting 800G speed,
and it is well standardized in IEEE.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---
 app/test-pmd/cmdline.c                      | 21 ++++++++++++++-------
 app/test-pmd/config.c                       |  2 ++
 app/test-pmd/parameters.c                   |  3 +++
 app/test/test_ethdev_link.c                 |  3 ++-
 doc/guides/rel_notes/release_25_11.rst      |  5 +++++
 doc/guides/testpmd_app_ug/run_app.rst       |  1 +
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  2 +-
 drivers/net/virtio/virtio_ethdev.c          |  2 ++
 lib/ethdev/rte_ethdev.c                     |  6 ++++++
 lib/ethdev/rte_ethdev.h                     |  2 ++
 10 files changed, 38 insertions(+), 9 deletions(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 801dee4456..3731fba370 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -710,7 +710,8 @@ static void cmd_help_long_parsed(void *parsed_result,
 			"    Detach physical or virtual dev by port_id\n\n"
 
 			"port config (port_id|all)"
-			" speed (10|100|1000|2500|5000|10000|25000|40000|50000|100000|200000|400000|auto)"
+			" speed (10|100|1000|2500|5000|10000|25000|40000|50000|"
+			"100000|200000|400000|800000|auto)"
 			" duplex (half|full|auto)\n"
 			"    Set speed and duplex for all ports or port_id\n\n"
 
@@ -1430,6 +1431,8 @@ parse_and_check_speed_duplex(char *speedstr, char *duplexstr, uint32_t *speed)
 			*speed = RTE_ETH_LINK_SPEED_200G;
 		} else if (!strcmp(speedstr, "400000")) {
 			*speed = RTE_ETH_LINK_SPEED_400G;
+		} else if (!strcmp(speedstr, "800000")) {
+			*speed = RTE_ETH_LINK_SPEED_800G;
 		} else if (!strcmp(speedstr, "auto")) {
 			*speed = RTE_ETH_LINK_SPEED_AUTONEG;
 		} else {
@@ -1480,7 +1483,8 @@ static cmdline_parse_token_string_t cmd_config_speed_all_item1 =
 	TOKEN_STRING_INITIALIZER(struct cmd_config_speed_all, item1, "speed");
 static cmdline_parse_token_string_t cmd_config_speed_all_value1 =
 	TOKEN_STRING_INITIALIZER(struct cmd_config_speed_all, value1,
-				"10#100#1000#2500#5000#10000#25000#40000#50000#100000#200000#400000#auto");
+		"10#100#1000#2500#5000#10000#25000#40000#50000#"
+		"100000#200000#400000#800000#auto");
 static cmdline_parse_token_string_t cmd_config_speed_all_item2 =
 	TOKEN_STRING_INITIALIZER(struct cmd_config_speed_all, item2, "duplex");
 static cmdline_parse_token_string_t cmd_config_speed_all_value2 =
@@ -1491,8 +1495,9 @@ static cmdline_parse_inst_t cmd_config_speed_all = {
 	.f = cmd_config_speed_all_parsed,
 	.data = NULL,
 	.help_str = "port config all speed "
-		"10|100|1000|2500|5000|10000|25000|40000|50000|100000|200000|400000|auto duplex "
-							"half|full|auto",
+		"10|100|1000|2500|5000|10000|25000|40000|50000|"
+		"100000|200000|400000|800000|auto "
+		"duplex half|full|auto",
 	.tokens = {
 		(void *)&cmd_config_speed_all_port,
 		(void *)&cmd_config_speed_all_keyword,
@@ -1555,7 +1560,8 @@ static cmdline_parse_token_string_t cmd_config_speed_specific_item1 =
 								"speed");
 static cmdline_parse_token_string_t cmd_config_speed_specific_value1 =
 	TOKEN_STRING_INITIALIZER(struct cmd_config_speed_specific, value1,
-				"10#100#1000#2500#5000#10000#25000#40000#50000#100000#200000#400000#auto");
+		"10#100#1000#2500#5000#10000#25000#40000#50000#"
+		"100000#200000#400000#800000#auto");
 static cmdline_parse_token_string_t cmd_config_speed_specific_item2 =
 	TOKEN_STRING_INITIALIZER(struct cmd_config_speed_specific, item2,
 								"duplex");
@@ -1567,8 +1573,9 @@ static cmdline_parse_inst_t cmd_config_speed_specific = {
 	.f = cmd_config_speed_specific_parsed,
 	.data = NULL,
 	.help_str = "port config <port_id> speed "
-		"10|100|1000|2500|5000|10000|25000|40000|50000|100000|200000|400000|auto duplex "
-							"half|full|auto",
+		"10|100|1000|2500|5000|10000|25000|40000|50000|"
+		"100000|200000|400000|800000|auto "
+		"duplex half|full|auto",
 	.tokens = {
 		(void *)&cmd_config_speed_specific_port,
 		(void *)&cmd_config_speed_specific_keyword,
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 08048da6f8..85f148a174 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -634,6 +634,8 @@ device_infos_display_speeds(uint32_t speed_capa)
 		printf(" 200 Gbps  ");
 	if (speed_capa & RTE_ETH_LINK_SPEED_400G)
 		printf(" 400 Gbps  ");
+	if (speed_capa & RTE_ETH_LINK_SPEED_800G)
+		printf(" 800 Gbps  ");
 }
 
 void
diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index 80c6ecae54..f7601df0bf 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -924,6 +924,9 @@ parse_link_speed(int n)
 	case 400000:
 		speed |= RTE_ETH_LINK_SPEED_400G;
 		break;
+	case 800000:
+		speed |= RTE_ETH_LINK_SPEED_800G;
+		break;
 	case 100:
 	case 10:
 	default:
diff --git a/app/test/test_ethdev_link.c b/app/test/test_ethdev_link.c
index f063a5fe26..47c526eb0c 100644
--- a/app/test/test_ethdev_link.c
+++ b/app/test/test_ethdev_link.c
@@ -54,7 +54,7 @@ test_link_status_up_default(void)
 		"string with HDX");
 
 	/* test max str len */
-	link_status.link_speed = RTE_ETH_SPEED_NUM_400G;
+	link_status.link_speed = RTE_ETH_SPEED_NUM_800G;
 	link_status.link_duplex = RTE_ETH_LINK_HALF_DUPLEX;
 	link_status.link_autoneg = RTE_ETH_LINK_AUTONEG;
 	ret = rte_eth_link_to_str(text, sizeof(text), &link_status);
@@ -131,6 +131,7 @@ test_link_speed_all_values(void)
 		{ "100 Gbps", RTE_ETH_SPEED_NUM_100G },
 		{ "200 Gbps", RTE_ETH_SPEED_NUM_200G },
 		{ "400 Gbps", RTE_ETH_SPEED_NUM_400G },
+		{ "800 Gbps", RTE_ETH_SPEED_NUM_800G },
 		{ "Unknown",  RTE_ETH_SPEED_NUM_UNKNOWN },
 		{ "Invalid",   50505 }
 	};
diff --git a/doc/guides/rel_notes/release_25_11.rst b/doc/guides/rel_notes/release_25_11.rst
index e81ba33907..122029b3c8 100644
--- a/doc/guides/rel_notes/release_25_11.rst
+++ b/doc/guides/rel_notes/release_25_11.rst
@@ -55,6 +55,11 @@ New Features
      Also, make sure to start the actual text at the margin.
      =======================================================
 
+* **Added speed 800G.**
+
+  Added Ethernet link speed for 800 Gb/s as it is well standardized in IEEE,
+  and some devices already support this speed.
+
 * **Updated DPAA2 ethernet driver.**
 
   * Enabled software taildrop for ordered queues.
diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst
index 35a0c5528c..171f87e56d 100644
--- a/doc/guides/testpmd_app_ug/run_app.rst
+++ b/doc/guides/testpmd_app_ug/run_app.rst
@@ -409,6 +409,7 @@ The command line options are:
        100000 - 100Gbps
        200000 - 200Gbps
        400000 - 400Gbps
+       800000 - 800Gbps
        ...
 
 *   ``--disable-link-check``
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 6ad83ae50d..ea0ab9bcab 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -2090,7 +2090,7 @@ port config - speed
 
 Set the speed and duplex mode for all ports or a specific port::
 
-   testpmd> port config (port_id|all) speed (10|100|1000|2500|5000|10000|25000|40000|50000|100000|200000|400000|auto) \
+   testpmd> port config (port_id|all) speed (10|100|1000|2500|5000|10000|25000|40000|50000|100000|200000|400000|800000|auto) \
             duplex (half|full|auto)
 
 port config - queues/descriptors
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 2d2635b669..eebc3ea817 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -2104,6 +2104,8 @@ virtio_dev_speed_capa_get(uint32_t speed)
 		return RTE_ETH_LINK_SPEED_200G;
 	case RTE_ETH_SPEED_NUM_400G:
 		return RTE_ETH_LINK_SPEED_400G;
+	case RTE_ETH_SPEED_NUM_800G:
+		return RTE_ETH_LINK_SPEED_800G;
 	default:
 		return 0;
 	}
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 4148c33807..f22139cb38 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -1078,6 +1078,9 @@ rte_eth_speed_bitflag(uint32_t speed, int duplex)
 	case RTE_ETH_SPEED_NUM_400G:
 		ret = RTE_ETH_LINK_SPEED_400G;
 		break;
+	case RTE_ETH_SPEED_NUM_800G:
+		ret = RTE_ETH_LINK_SPEED_800G;
+		break;
 	default:
 		ret = 0;
 	}
@@ -3287,6 +3290,9 @@ rte_eth_link_speed_to_str(uint32_t link_speed)
 	case RTE_ETH_SPEED_NUM_400G:
 		ret = "400 Gbps";
 		break;
+	case RTE_ETH_SPEED_NUM_800G:
+		ret = "800 Gbps";
+		break;
 	case RTE_ETH_SPEED_NUM_UNKNOWN:
 		ret = "Unknown";
 		break;
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index 5d7fc5ee9d..d23c143eed 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -306,6 +306,7 @@ struct rte_eth_stats {
 #define RTE_ETH_LINK_SPEED_100G    RTE_BIT32(14) /**< 100 Gbps */
 #define RTE_ETH_LINK_SPEED_200G    RTE_BIT32(15) /**< 200 Gbps */
 #define RTE_ETH_LINK_SPEED_400G    RTE_BIT32(16) /**< 400 Gbps */
+#define RTE_ETH_LINK_SPEED_800G    RTE_BIT32(17) /**< 800 Gbps */
 /**@}*/
 
 /**@{@name Link speed
@@ -326,6 +327,7 @@ struct rte_eth_stats {
 #define RTE_ETH_SPEED_NUM_100G    100000 /**< 100 Gbps */
 #define RTE_ETH_SPEED_NUM_200G    200000 /**< 200 Gbps */
 #define RTE_ETH_SPEED_NUM_400G    400000 /**< 400 Gbps */
+#define RTE_ETH_SPEED_NUM_800G    800000 /**< 800 Gbps */
 #define RTE_ETH_SPEED_NUM_UNKNOWN UINT32_MAX /**< Unknown */
 /**@}*/
 
-- 
2.47.1

Re: [PATCH 1/1] ethdev: add link speed 800G

[Stephen Hemminger]

On Tue, 12 Aug 2025 16:42:48 +0200
Thomas Monjalon <thomas@monjalon.net> wrote:

> diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
> index 5d7fc5ee9d..d23c143eed 100644
> --- a/lib/ethdev/rte_ethdev.h
> +++ b/lib/ethdev/rte_ethdev.h
> @@ -306,6 +306,7 @@ struct rte_eth_stats {
>  #define RTE_ETH_LINK_SPEED_100G    RTE_BIT32(14) /**< 100 Gbps */
>  #define RTE_ETH_LINK_SPEED_200G    RTE_BIT32(15) /**< 200 Gbps */
>  #define RTE_ETH_LINK_SPEED_400G    RTE_BIT32(16) /**< 400 Gbps */
> +#define RTE_ETH_LINK_SPEED_800G    RTE_BIT32(17) /**< 800 Gbps */

Do you want to go further, looking around I see roadmaps for.
1.6Tbs, 3.2 Tbs, 6.4 Tbs (2028) and beyond.

Looks like will run out of bits in 2040...

Re: [PATCH 1/1] ethdev: add link speed 800G

[Andrew Rybchenko]

On 8/12/25 17:42, Thomas Monjalon wrote:
> There are some devices supporting 800G speed,
> and it is well standardized in IEEE.
> 
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>

Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

RE: [PATCH 1/1] ethdev: add link speed 800G

[Morten Brørup]

> From: Thomas Monjalon [mailto:thomas@monjalon.net]
> Sent: Tuesday, 12 August 2025 16.43
> 
> There are some devices supporting 800G speed,
> and it is well standardized in IEEE.
> 
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> ---

Acked-by: Morten Brørup <mb@smartsharesystems.com>

Re: [PATCH 1/1] ethdev: add link speed 800G

[Khadem Ullah]

[-- Attachment #1: Type: text/plain, Size: 284 bytes --]

Acked-by: Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk>


On Tue, Aug 12, 2025, 19:43 Thomas Monjalon <thomas@monjalon.net> wrote:

> There are some devices supporting 800G speed,
> and it is well standardized in IEEE.
>
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> ---
>

[-- Attachment #2: Type: text/html, Size: 822 bytes --]

Re: [PATCH 1/1] ethdev: add link speed 800G

[fengchengwen]

Acked-by: Chengwen Feng <fengchengwen@huawei.com>

On 8/12/2025 10:42 PM, Thomas Monjalon wrote:
> There are some devices supporting 800G speed,
> and it is well standardized in IEEE.
> 
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>

Re: [PATCH 1/1] ethdev: add link speed 800G

[Thomas Monjalon]

12/08/2025 17:34, Stephen Hemminger:
> On Tue, 12 Aug 2025 16:42:48 +0200
> Thomas Monjalon <thomas@monjalon.net> wrote:
> 
> > diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
> > index 5d7fc5ee9d..d23c143eed 100644
> > --- a/lib/ethdev/rte_ethdev.h
> > +++ b/lib/ethdev/rte_ethdev.h
> > @@ -306,6 +306,7 @@ struct rte_eth_stats {
> >  #define RTE_ETH_LINK_SPEED_100G    RTE_BIT32(14) /**< 100 Gbps */
> >  #define RTE_ETH_LINK_SPEED_200G    RTE_BIT32(15) /**< 200 Gbps */
> >  #define RTE_ETH_LINK_SPEED_400G    RTE_BIT32(16) /**< 400 Gbps */
> > +#define RTE_ETH_LINK_SPEED_800G    RTE_BIT32(17) /**< 800 Gbps */
> 
> Do you want to go further, looking around I see roadmaps for.
> 1.6Tbs, 3.2 Tbs, 6.4 Tbs (2028) and beyond.

I prefer adding speeds as they are standardized and useful for DPDK.

> Looks like will run out of bits in 2040...

I observe the max speed doubling every 3 years.
So I imagine we will run out of bits in 2070,
or earlier if we have new intermediate speeds.
But in any case we have at least 20 years before it happens,
so it looks safe to me.

Re: [PATCH 1/1] ethdev: add link speed 800G

[Stephen Hemminger]

On Wed, 13 Aug 2025 12:01:53 +0200
Thomas Monjalon <thomas@monjalon.net> wrote:

> > Looks like will run out of bits in 2040...  
> 
> I observe the max speed doubling every 3 years.
> So I imagine we will run out of bits in 2070,
> or earlier if we have new intermediate speeds.
> But in any case we have at least 20 years before it happens,
> so it looks safe to me.

That was just my lame attempt a joke.

Re: [PATCH 1/1] ethdev: add link speed 800G

[Stephen Hemminger]

On Tue, 12 Aug 2025 16:42:48 +0200
Thomas Monjalon <thomas@monjalon.net> wrote:

> There are some devices supporting 800G speed,
> and it is well standardized in IEEE.
> 
> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>

Applied to next-net

Re: [PATCH 1/1] ethdev: add link speed 800G

[Thomas Monjalon]

13/08/2025 16:18, Stephen Hemminger:
> On Wed, 13 Aug 2025 12:01:53 +0200
> Thomas Monjalon <thomas@monjalon.net> wrote:
> 
> > > Looks like will run out of bits in 2040...  
> > 
> > I observe the max speed doubling every 3 years.
> > So I imagine we will run out of bits in 2070,
> > or earlier if we have new intermediate speeds.
> > But in any case we have at least 20 years before it happens,
> > so it looks safe to me.
> 
> That was just my lame attempt a joke.

Sorry for not spotting the joke :)