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From: Ivan Malov <ivan.malov@oktetlabs.ru>
To: dev@dpdk.org
Cc: Andy Moreton <amoreton@xilinx.com>,
	Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
	Ray Kinsella <mdr@ashroe.eu>, Jerin Jacob <jerinj@marvell.com>,
	Wisam Jaddo <wisamm@nvidia.com>,
	Xiaoyun Li <xiaoyun.li@intel.com>,
	Thomas Monjalon <thomas@monjalon.net>,
	Ferruh Yigit <ferruh.yigit@intel.com>, Ori Kam <orika@nvidia.com>
Subject: [dpdk-dev] [PATCH v3 1/5] ethdev: add API to negotiate delivery of Rx meta data
Date: Thu, 23 Sep 2021 14:20:08 +0300
Message-ID: <20210923112012.14595-2-ivan.malov@oktetlabs.ru> (raw)
In-Reply-To: <20210923112012.14595-1-ivan.malov@oktetlabs.ru>

Delivery of mark, flag and the likes might affect small packet performance.
If these features are disabled by default, enabling them in started state
without causing traffic disruption may not always be possible.

Let applications negotiate delivery of Rx meta data beforehand.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
Acked-by: Ray Kinsella <mdr@ashroe.eu>
Acked-by: Jerin Jacob <jerinj@marvell.com>
---
 app/test-flow-perf/main.c              | 21 ++++++++++++
 app/test-pmd/testpmd.c                 | 26 +++++++++++++++
 doc/guides/rel_notes/release_21_11.rst |  9 ++++++
 lib/ethdev/ethdev_driver.h             | 19 +++++++++++
 lib/ethdev/rte_ethdev.c                | 25 ++++++++++++++
 lib/ethdev/rte_ethdev.h                | 45 ++++++++++++++++++++++++++
 lib/ethdev/rte_flow.h                  | 12 +++++++
 lib/ethdev/version.map                 |  3 ++
 8 files changed, 160 insertions(+)

diff --git a/app/test-flow-perf/main.c b/app/test-flow-perf/main.c
index 9be8edc31d..48eafffb1d 100644
--- a/app/test-flow-perf/main.c
+++ b/app/test-flow-perf/main.c
@@ -1760,6 +1760,27 @@ init_port(void)
 		rte_exit(EXIT_FAILURE, "Error: can't init mbuf pool\n");
 
 	for (port_id = 0; port_id < nr_ports; port_id++) {
+		uint64_t rx_meta_features = 0;
+
+		rx_meta_features |= RTE_ETH_RX_META_USER_FLAG;
+		rx_meta_features |= RTE_ETH_RX_META_USER_MARK;
+
+		ret = rte_eth_rx_meta_negotiate(port_id, &rx_meta_features);
+		if (ret == 0) {
+			if (!(rx_meta_features & RTE_ETH_RX_META_USER_FLAG)) {
+				printf(":: flow action FLAG will not affect Rx mbufs on port=%u\n",
+				       port_id);
+			}
+
+			if (!(rx_meta_features & RTE_ETH_RX_META_USER_MARK)) {
+				printf(":: flow action MARK will not affect Rx mbufs on port=%u\n",
+				       port_id);
+			}
+		} else if (ret != -ENOTSUP) {
+			rte_exit(EXIT_FAILURE, "Error when negotiating Rx meta features on port=%u: %s\n",
+				 port_id, rte_strerror(-ret));
+		}
+
 		ret = rte_eth_dev_info_get(port_id, &dev_info);
 		if (ret != 0)
 			rte_exit(EXIT_FAILURE,
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 97ae52e17e..7a8da3d7ab 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -1485,10 +1485,36 @@ static void
 init_config_port_offloads(portid_t pid, uint32_t socket_id)
 {
 	struct rte_port *port = &ports[pid];
+	uint64_t rx_meta_features = 0;
 	uint16_t data_size;
 	int ret;
 	int i;
 
+	rx_meta_features |= RTE_ETH_RX_META_USER_FLAG;
+	rx_meta_features |= RTE_ETH_RX_META_USER_MARK;
+	rx_meta_features |= RTE_ETH_RX_META_TUNNEL_ID;
+
+	ret = rte_eth_rx_meta_negotiate(pid, &rx_meta_features);
+	if (ret == 0) {
+		if (!(rx_meta_features & RTE_ETH_RX_META_USER_FLAG)) {
+			TESTPMD_LOG(INFO, "Flow action FLAG will not affect Rx mbufs on port %u\n",
+				    pid);
+		}
+
+		if (!(rx_meta_features & RTE_ETH_RX_META_USER_MARK)) {
+			TESTPMD_LOG(INFO, "Flow action MARK will not affect Rx mbufs on port %u\n",
+				    pid);
+		}
+
+		if (!(rx_meta_features & RTE_ETH_RX_META_TUNNEL_ID)) {
+			TESTPMD_LOG(INFO, "Flow tunnel offload support might be limited or unavailable on port %u\n",
+				    pid);
+		}
+	} else if (ret != -ENOTSUP) {
+		rte_exit(EXIT_FAILURE, "Error when negotiating Rx meta features on port %u: %s\n",
+			 pid, rte_strerror(-ret));
+	}
+
 	port->dev_conf.txmode = tx_mode;
 	port->dev_conf.rxmode = rx_mode;
 
diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 19356ac53c..6674d4474c 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -106,6 +106,15 @@ New Features
   Added command-line options to specify total number of processes and
   current process ID. Each process owns subset of Rx and Tx queues.
 
+* **Added an API to negotiate delivery of specific parts of Rx meta data**
+
+  A new API, ``rte_eth_rx_meta_negotiate()``, was added.
+  The following parts of Rx meta data were defined:
+
+  * ``RTE_ETH_RX_META_USER_FLAG``
+  * ``RTE_ETH_RX_META_USER_MARK``
+  * ``RTE_ETH_RX_META_TUNNEL_ID``
+
 
 Removed Items
 -------------
diff --git a/lib/ethdev/ethdev_driver.h b/lib/ethdev/ethdev_driver.h
index 40e474aa7e..96e0c60cae 100644
--- a/lib/ethdev/ethdev_driver.h
+++ b/lib/ethdev/ethdev_driver.h
@@ -789,6 +789,22 @@ typedef int (*eth_get_monitor_addr_t)(void *rxq,
 typedef int (*eth_representor_info_get_t)(struct rte_eth_dev *dev,
 	struct rte_eth_representor_info *info);
 
+/**
+ * @internal
+ * Negotiate delivery of specific parts of Rx meta data.
+ *
+ * @param dev
+ *   Port (ethdev) handle
+ *
+ * @param[inout] features
+ *   Feature selection buffer
+ *
+ * @return
+ *   Negative errno value on error, zero otherwise
+ */
+typedef int (*eth_rx_meta_negotiate_t)(struct rte_eth_dev *dev,
+				       uint64_t *features);
+
 /**
  * @internal A structure containing the functions exported by an Ethernet driver.
  */
@@ -949,6 +965,9 @@ struct eth_dev_ops {
 
 	eth_representor_info_get_t representor_info_get;
 	/**< Get representor info. */
+
+	eth_rx_meta_negotiate_t rx_meta_negotiate;
+	/**< Negotiate delivery of specific parts of Rx meta data. */
 };
 
 /**
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index daf5ca9242..49cb84d64c 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -6310,6 +6310,31 @@ rte_eth_representor_info_get(uint16_t port_id,
 	return eth_err(port_id, (*dev->dev_ops->representor_info_get)(dev, info));
 }
 
+int
+rte_eth_rx_meta_negotiate(uint16_t port_id, uint64_t *features)
+{
+	struct rte_eth_dev *dev;
+
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+	dev = &rte_eth_devices[port_id];
+
+	if (dev->data->dev_configured != 0) {
+		RTE_ETHDEV_LOG(ERR,
+			"The port (id=%"PRIu16") is already configured\n",
+			port_id);
+		return -EBUSY;
+	}
+
+	if (features == NULL) {
+		RTE_ETHDEV_LOG(ERR, "Invalid features (NULL)\n");
+		return -EINVAL;
+	}
+
+	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_meta_negotiate, -ENOTSUP);
+	return eth_err(port_id,
+		       (*dev->dev_ops->rx_meta_negotiate)(dev, features));
+}
+
 RTE_LOG_REGISTER_DEFAULT(rte_eth_dev_logtype, INFO);
 
 RTE_INIT(ethdev_init_telemetry)
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index 1da37896d8..8467a7a362 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -4888,6 +4888,51 @@ __rte_experimental
 int rte_eth_representor_info_get(uint16_t port_id,
 				 struct rte_eth_representor_info *info);
 
+/** The ethdev sees flagged packets if there are flows with action FLAG. */
+#define RTE_ETH_RX_META_USER_FLAG (UINT64_C(1) << 0)
+
+/** The ethdev sees mark IDs in packets if there are flows with action MARK. */
+#define RTE_ETH_RX_META_USER_MARK (UINT64_C(1) << 1)
+
+/** The ethdev detects missed packets if there are "tunnel_set" flows in use. */
+#define RTE_ETH_RX_META_TUNNEL_ID (UINT64_C(1) << 2)
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Negotiate delivery of specific parts of Rx meta data.
+ *
+ * Invoke this API before the first rte_eth_dev_configure() invocation
+ * to let the PMD make preparations that are inconvenient to do later.
+ *
+ * The negotiation process is as follows:
+ *
+ * - the application requests features intending to use at least some of them;
+ * - the PMD responds with the guaranteed subset of the requested feature set;
+ * - the application can retry negotiation with another set of features;
+ * - the application can pass zero to clear the negotiation result;
+ * - the last negotiated result takes effect upon the ethdev start.
+ *
+ * If this API is unsupported, the application should gracefully ignore that.
+ *
+ * @param port_id
+ *   Port (ethdev) identifier
+ *
+ * @param[inout] features
+ *   Feature selection buffer
+ *
+ * @return
+ *   - (-EBUSY) if the port can't handle this in its current state;
+ *   - (-ENOTSUP) if the method itself is not supported by the PMD;
+ *   - (-ENODEV) if *port_id* is invalid;
+ *   - (-EINVAL) if *features* is NULL;
+ *   - (-EIO) if the device is removed;
+ *   - (0) on success
+ */
+__rte_experimental
+int rte_eth_rx_meta_negotiate(uint16_t port_id, uint64_t *features);
+
 #include <rte_ethdev_core.h>
 
 /**
diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
index 70f455d47d..6eb7ec0574 100644
--- a/lib/ethdev/rte_flow.h
+++ b/lib/ethdev/rte_flow.h
@@ -1904,6 +1904,10 @@ enum rte_flow_action_type {
 	 * PKT_RX_FDIR_ID mbuf flags.
 	 *
 	 * See struct rte_flow_action_mark.
+	 *
+	 * One should negotiate delivery of mark IDs beforehand.
+	 * @see rte_eth_rx_meta_negotiate()
+	 * @see RTE_ETH_RX_META_USER_MARK
 	 */
 	RTE_FLOW_ACTION_TYPE_MARK,
 
@@ -1912,6 +1916,10 @@ enum rte_flow_action_type {
 	 * sets the PKT_RX_FDIR mbuf flag.
 	 *
 	 * No associated configuration structure.
+	 *
+	 * One should negotiate flag delivery beforehand.
+	 * @see rte_eth_rx_meta_negotiate()
+	 * @see RTE_ETH_RX_META_USER_FLAG
 	 */
 	RTE_FLOW_ACTION_TYPE_FLAG,
 
@@ -4223,6 +4231,10 @@ rte_flow_tunnel_match(uint16_t port_id,
 /**
  * Populate the current packet processing state, if exists, for the given mbuf.
  *
+ * One should negotiate the processing state information delivery beforehand.
+ * @see rte_eth_rx_meta_negotiate()
+ * @see RTE_ETH_RX_META_TUNNEL_ID
+ *
  * @param port_id
  *   Port identifier of Ethernet device.
  * @param[in] m
diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map
index 904bce6ea1..a8928266a9 100644
--- a/lib/ethdev/version.map
+++ b/lib/ethdev/version.map
@@ -247,6 +247,9 @@ EXPERIMENTAL {
 	rte_mtr_meter_policy_delete;
 	rte_mtr_meter_policy_update;
 	rte_mtr_meter_policy_validate;
+
+	# added in 21.11
+	rte_eth_rx_meta_negotiate;
 };
 
 INTERNAL {
-- 
2.20.1


  reply	other threads:[~2021-09-23 11:20 UTC|newest]

Thread overview: 97+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-02 14:23 [dpdk-dev] [PATCH 0/5] A means to negotiate support for Rx meta information Ivan Malov
2021-09-02 14:23 ` [dpdk-dev] [PATCH 1/5] ethdev: add API " Ivan Malov
2021-09-02 14:47   ` Jerin Jacob
2021-09-02 16:14   ` Kinsella, Ray
2021-09-03  9:34   ` Jerin Jacob
2021-09-02 14:23 ` [dpdk-dev] [PATCH 2/5] net/sfc: provide API to negotiate supported Rx meta features Ivan Malov
2021-09-02 14:23 ` [dpdk-dev] [PATCH 3/5] net/sfc: allow to use EF100 native datapath Rx mark in flows Ivan Malov
2021-09-02 14:23 ` [dpdk-dev] [PATCH 4/5] common/sfc_efx/base: add RxQ flag to use Rx prefix user flag Ivan Malov
2021-09-02 14:23 ` [dpdk-dev] [PATCH 5/5] net/sfc: allow to discern user flag on EF100 native datapath Ivan Malov
2021-09-03  0:15 ` [dpdk-dev] [PATCH v2 0/5] A means to negotiate support for Rx meta information Ivan Malov
2021-09-03  0:15   ` [dpdk-dev] [PATCH v2 1/5] ethdev: add API " Ivan Malov
2021-09-03  0:15   ` [dpdk-dev] [PATCH v2 2/5] net/sfc: provide API to negotiate supported Rx meta features Ivan Malov
2021-09-03  0:15   ` [dpdk-dev] [PATCH v2 3/5] net/sfc: allow to use EF100 native datapath Rx mark in flows Ivan Malov
2021-09-03  0:15   ` [dpdk-dev] [PATCH v2 4/5] common/sfc_efx/base: add RxQ flag to use Rx prefix user flag Ivan Malov
2021-09-03  0:15   ` [dpdk-dev] [PATCH v2 5/5] net/sfc: allow to discern user flag on EF100 native datapath Ivan Malov
2021-09-23 11:20 ` [dpdk-dev] [PATCH v3 0/5] A means to negotiate delivery of Rx meta data Ivan Malov
2021-09-23 11:20   ` Ivan Malov [this message]
2021-09-30 14:59     ` [dpdk-dev] [PATCH v3 1/5] ethdev: add API " Ori Kam
2021-09-30 15:07       ` Andrew Rybchenko
2021-09-30 19:07       ` Ivan Malov
2021-10-01  6:50         ` Andrew Rybchenko
2021-10-03  7:42           ` Ori Kam
2021-10-03  9:30             ` Ivan Malov
2021-10-03 11:01               ` Ori Kam
2021-10-03 17:30                 ` Ivan Malov
2021-10-03 21:04                   ` Ori Kam
2021-10-03 23:50                     ` Ivan Malov
2021-10-04  6:56                       ` Ori Kam
2021-10-04 11:39                         ` Ivan Malov
2021-10-04 13:53                           ` Andrew Rybchenko
2021-10-05  6:30                             ` Ori Kam
2021-10-05  7:27                               ` Andrew Rybchenko
2021-10-05  8:17                                 ` Ori Kam
2021-10-05  8:38                                   ` Andrew Rybchenko
2021-10-05  9:41                                     ` Ori Kam
2021-10-05 10:01                                       ` Andrew Rybchenko
2021-10-05 10:10                                         ` Ori Kam
2021-10-05 11:11                                           ` Andrew Rybchenko
2021-10-06  8:30                                             ` Thomas Monjalon
2021-10-06  8:38                                               ` Andrew Rybchenko
2021-10-06  9:14                                                 ` Ori Kam
2021-09-30 21:48     ` Ajit Khaparde
2021-09-30 22:00       ` Ivan Malov
2021-09-30 22:12         ` Ajit Khaparde
2021-09-30 22:22           ` Ivan Malov
2021-10-03  7:05             ` Ori Kam
2021-09-23 11:20   ` [dpdk-dev] [PATCH v3 2/5] net/sfc: support " Ivan Malov
2021-09-23 11:20   ` [dpdk-dev] [PATCH v3 3/5] net/sfc: support flow mark delivery on EF100 native datapath Ivan Malov
2021-09-23 11:20   ` [dpdk-dev] [PATCH v3 4/5] common/sfc_efx/base: add RxQ flag to use Rx prefix user flag Ivan Malov
2021-09-23 11:20   ` [dpdk-dev] [PATCH v3 5/5] net/sfc: report user flag on EF100 native datapath Ivan Malov
2021-09-30 16:18   ` [dpdk-dev] [PATCH v3 0/5] A means to negotiate delivery of Rx meta data Thomas Monjalon
2021-09-30 19:30     ` Ivan Malov
2021-10-01  6:47       ` Andrew Rybchenko
2021-10-01  8:11         ` Thomas Monjalon
2021-10-01  8:54           ` Andrew Rybchenko
2021-10-01  9:32             ` Thomas Monjalon
2021-10-01  9:41               ` Andrew Rybchenko
2021-10-01  8:55           ` Ivan Malov
2021-10-01  9:48             ` Thomas Monjalon
2021-10-01 10:15               ` Andrew Rybchenko
2021-10-01 12:10                 ` Thomas Monjalon
2021-10-04  9:17                   ` Andrew Rybchenko
2021-10-04 23:50   ` [dpdk-dev] [PATCH v4 0/5] Negotiate the NIC's ability to deliver Rx metadata to the PMD Ivan Malov
2021-10-04 23:50     ` [dpdk-dev] [PATCH v4 1/5] ethdev: negotiate delivery of packet metadata from HW to PMD Ivan Malov
2021-10-05 12:03       ` Ori Kam
2021-10-05 12:50         ` Ivan Malov
2021-10-05 13:17           ` Andrew Rybchenko
2021-10-04 23:50     ` [dpdk-dev] [PATCH v4 2/5] net/sfc: support API to negotiate delivery of Rx metadata Ivan Malov
2021-10-04 23:50     ` [dpdk-dev] [PATCH v4 3/5] net/sfc: support flow mark delivery on EF100 native datapath Ivan Malov
2021-10-04 23:50     ` [dpdk-dev] [PATCH v4 4/5] common/sfc_efx/base: add RxQ flag to use Rx prefix user flag Ivan Malov
2021-10-04 23:50     ` [dpdk-dev] [PATCH v4 5/5] net/sfc: report user flag on EF100 native datapath Ivan Malov
2021-10-05 15:56   ` [dpdk-dev] [PATCH v5 0/5] ethdev: negotiate the NIC's ability to deliver Rx metadata to the PMD Ivan Malov
2021-10-05 15:56     ` [dpdk-dev] [PATCH v5 1/5] ethdev: negotiate delivery of packet metadata from HW to PMD Ivan Malov
2021-10-05 21:40       ` Ajit Khaparde
2021-10-06  6:04         ` Somnath Kotur
2021-10-06  6:10           ` Ori Kam
2021-10-06  7:22             ` Wisam Monther
2021-10-05 15:56     ` [dpdk-dev] [PATCH v5 2/5] net/sfc: support API to negotiate delivery of Rx metadata Ivan Malov
2021-10-05 15:56     ` [dpdk-dev] [PATCH v5 3/5] net/sfc: support flow mark delivery on EF100 native datapath Ivan Malov
2021-10-05 15:56     ` [dpdk-dev] [PATCH v5 4/5] common/sfc_efx/base: add RxQ flag to use Rx prefix user flag Ivan Malov
2021-10-05 15:56     ` [dpdk-dev] [PATCH v5 5/5] net/sfc: report user flag on EF100 native datapath Ivan Malov
2021-10-12 18:08       ` Ferruh Yigit
2021-10-12 19:39         ` Ivan Malov
2021-10-12 19:48         ` Ivan Malov
2021-10-12 19:38   ` [dpdk-dev] [PATCH v6 0/5] ethdev: negotiate the NIC's ability to deliver Rx metadata to the PMD Ivan Malov
2021-10-12 19:38     ` [dpdk-dev] [PATCH v6 1/5] ethdev: negotiate delivery of packet metadata from HW to PMD Ivan Malov
2021-10-12 19:38     ` [dpdk-dev] [PATCH v6 2/5] net/sfc: support API to negotiate delivery of Rx metadata Ivan Malov
2021-10-12 19:38     ` [dpdk-dev] [PATCH v6 3/5] net/sfc: support flow mark delivery on EF100 native datapath Ivan Malov
2021-10-12 19:38     ` [dpdk-dev] [PATCH v6 4/5] common/sfc_efx/base: add RxQ flag to use Rx prefix user flag Ivan Malov
2021-10-12 19:38     ` [dpdk-dev] [PATCH v6 5/5] net/sfc: report user flag on EF100 native datapath Ivan Malov
2021-10-12 19:46   ` [dpdk-dev] [PATCH v7 0/5] ethdev: negotiate the NIC's ability to deliver Rx metadata to the PMD Ivan Malov
2021-10-12 19:46     ` [dpdk-dev] [PATCH v7 1/5] ethdev: negotiate delivery of packet metadata from HW to PMD Ivan Malov
2021-10-12 19:46     ` [dpdk-dev] [PATCH v7 2/5] net/sfc: support API to negotiate delivery of Rx metadata Ivan Malov
2021-10-12 19:46     ` [dpdk-dev] [PATCH v7 3/5] net/sfc: support flow mark delivery on EF100 native datapath Ivan Malov
2021-10-12 19:46     ` [dpdk-dev] [PATCH v7 4/5] common/sfc_efx/base: add RxQ flag to use Rx prefix user flag Ivan Malov
2021-10-12 19:46     ` [dpdk-dev] [PATCH v7 5/5] net/sfc: report user flag on EF100 native datapath Ivan Malov
2021-10-12 23:25     ` [dpdk-dev] [PATCH v7 0/5] ethdev: negotiate the NIC's ability to deliver Rx metadata to the PMD Ferruh Yigit

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