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From: Declan Doherty <declan.doherty@intel.com>
To: dev@dpdk.org
Cc: Adrien Mazarguil <adrien.mazarguil@6wind.com>,
	Ferruh Yigit <ferruh.yigit@intel.com>,
	Thomas Monjalon <thomas@monjalon.net>,
	Shahaf Shuler <shahafs@mellanox.com>,
	Konstantin Ananyev <konstantin.ananyev@intel.com>,
	Declan Doherty <declan.doherty@intel.com>
Subject: [PATCH v8 7/9] ethdev: add switch domain allocator
Date: Thu, 26 Apr 2018 11:41:03 +0100	[thread overview]
Message-ID: <20180426104105.18342-8-declan.doherty@intel.com> (raw)
In-Reply-To: <20180426104105.18342-1-declan.doherty@intel.com>

Add switch domain allocate and free API to enable NET devices to synchronise
switch domain allocation.

Signed-off-by: Declan Doherty <declan.doherty@intel.com>
---
 lib/librte_ether/rte_ethdev.c           | 54 +++++++++++++++++++++++++++++++++
 lib/librte_ether/rte_ethdev_driver.h    | 39 ++++++++++++++++++++++++
 lib/librte_ether/rte_ethdev_version.map |  2 ++
 3 files changed, 95 insertions(+)

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index cb85d8bb7..a09c7e5b3 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -4102,6 +4102,60 @@ rte_eth_dev_pool_ops_supported(uint16_t port_id, const char *pool)
 	return (*dev->dev_ops->pool_ops_supported)(dev, pool);
 }
 
+/**
+ * A set of values to describe the possible states of a switch domain.
+ */
+enum rte_eth_switch_domain_state {
+	RTE_ETH_SWITCH_DOMAIN_UNUSED = 0,
+	RTE_ETH_SWITCH_DOMAIN_ALLOCATED
+};
+
+/**
+ * Array of switch domains available for allocation. Array is sized to
+ * RTE_MAX_ETHPORTS elements as there cannot be more active switch domains than
+ * ethdev ports in a single process.
+ */
+struct rte_eth_dev_switch {
+	enum rte_eth_switch_domain_state state;
+} rte_eth_switch_domains[RTE_MAX_ETHPORTS];
+
+int __rte_experimental
+rte_eth_switch_domain_alloc(uint16_t *domain_id)
+{
+	unsigned int i;
+
+	*domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
+
+	for (i = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID + 1;
+		i < RTE_MAX_ETHPORTS; i++) {
+		if (rte_eth_switch_domains[i].state ==
+			RTE_ETH_SWITCH_DOMAIN_UNUSED) {
+			rte_eth_switch_domains[i].state =
+				RTE_ETH_SWITCH_DOMAIN_ALLOCATED;
+			*domain_id = i;
+			return 0;
+		}
+	}
+
+	return -ENOSPC;
+}
+
+int __rte_experimental
+rte_eth_switch_domain_free(uint16_t domain_id)
+{
+	if (domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID ||
+		domain_id >= RTE_MAX_ETHPORTS)
+		return -EINVAL;
+
+	if (rte_eth_switch_domains[domain_id].state !=
+		RTE_ETH_SWITCH_DOMAIN_ALLOCATED)
+		return -EINVAL;
+
+	rte_eth_switch_domains[domain_id].state = RTE_ETH_SWITCH_DOMAIN_UNUSED;
+
+	return 0;
+}
+
 typedef int (*rte_eth_devargs_callback_t)(char *str, void *data);
 
 static int
diff --git a/lib/librte_ether/rte_ethdev_driver.h b/lib/librte_ether/rte_ethdev_driver.h
index 492da754a..f428afa72 100644
--- a/lib/librte_ether/rte_ethdev_driver.h
+++ b/lib/librte_ether/rte_ethdev_driver.h
@@ -188,6 +188,45 @@ rte_eth_linkstatus_get(const struct rte_eth_dev *dev,
 #endif
 }
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Allocate an unique switch domain identifier.
+ *
+ * A pool of switch domain identifiers which can be allocated on request. This
+ * will enabled devices which support the concept of switch domains to request
+ * a switch domain id which is guaranteed to be unique from other devices
+ * running in the same process.
+ *
+ * @param domain_id
+ *  switch domain identifier parameter to pass back to application
+ *
+ * @return
+ *   Negative errno value on error, 0 on success.
+ */
+int __rte_experimental
+rte_eth_switch_domain_alloc(uint16_t *domain_id);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Free switch domain.
+ *
+ * Return a switch domain identifier to the pool of free identifiers after it is
+ * no longer in use by device.
+ *
+ * @param domain_id
+ *  switch domain identifier to free
+ *
+ * @return
+ *   Negative errno value on error, 0 on success.
+ */
+int __rte_experimental
+rte_eth_switch_domain_free(uint16_t domain_id);
+
+
 
 /** Generic Ethernet device arguments  */
 struct rte_eth_devargs {
diff --git a/lib/librte_ether/rte_ethdev_version.map b/lib/librte_ether/rte_ethdev_version.map
index 41c3d2699..86f06769a 100644
--- a/lib/librte_ether/rte_ethdev_version.map
+++ b/lib/librte_ether/rte_ethdev_version.map
@@ -220,6 +220,8 @@ EXPERIMENTAL {
 	rte_eth_dev_rx_offload_name;
 	rte_eth_dev_tx_offload_name;
 	rte_eth_find_next_owned_by;
+	rte_eth_switch_domain_alloc;
+	rte_eth_switch_domain_free;
 	rte_mtr_capabilities_get;
 	rte_mtr_create;
 	rte_mtr_destroy;
-- 
2.14.3

  parent reply	other threads:[~2018-04-26 10:49 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-28 13:54 [PATCH v6 0/7] switching device representation Declan Doherty
2018-03-28 13:54 ` [PATCH v6 1/8] doc: add switch representation documentation Declan Doherty
2018-03-28 14:53   ` Thomas Monjalon
2018-03-28 15:05     ` Doherty, Declan
2018-04-03 15:52   ` Adrien Mazarguil
2018-03-28 13:54 ` [PATCH v6 2/8] ethdev: add switch identifier parameter to port Declan Doherty
2018-03-29  6:13   ` Shahaf Shuler
2018-03-29  9:13     ` Doherty, Declan
2018-03-29 10:12       ` Shahaf Shuler
2018-03-29 15:12         ` Doherty, Declan
2018-04-01  6:10           ` Shahaf Shuler
2018-03-28 13:54 ` [PATCH v6 3/8] ethdev: add generic create/destroy ethdev APIs Declan Doherty
2018-03-29  6:13   ` Shahaf Shuler
2018-03-29  9:22     ` Doherty, Declan
2018-03-28 13:54 ` [PATCH v6 4/8] ethdev: Add port representor device flag Declan Doherty
2018-03-29  6:13   ` Shahaf Shuler
2018-03-29  7:34     ` Thomas Monjalon
2018-03-29 14:53     ` Doherty, Declan
2018-04-01  6:14       ` Shahaf Shuler
2018-03-28 13:54 ` [PATCH v6 5/8] app/testpmd: add port name to device info Declan Doherty
2018-03-28 13:54 ` [PATCH v6 6/8] ethdev: add common devargs parser Declan Doherty
2018-03-29 12:12   ` Gaëtan Rivet
2018-03-28 13:54 ` [PATCH v6 7/8] net/i40e: add support for representor ports Declan Doherty
2018-03-28 13:54 ` [PATCH v6 8/8] net/ixgbe: " Declan Doherty
2018-04-16 13:05 ` [PATCH v7 0/9] switching devices representation Declan Doherty
2018-04-16 13:05   ` [PATCH v7 1/9] doc: add switch representation documentation Declan Doherty
2018-04-16 15:55     ` Kovacevic, Marko
2018-04-16 13:05   ` [PATCH v7 2/9] ethdev: add switch identifier parameter to port Declan Doherty
2018-04-24 16:38     ` Thomas Monjalon
2018-04-16 13:05   ` [PATCH v7 3/9] ethdev: add generic create/destroy ethdev APIs Declan Doherty
2018-04-20 13:01     ` Ananyev, Konstantin
2018-04-24 17:48     ` Thomas Monjalon
2018-04-16 13:06   ` [PATCH v7 4/9] ethdev: Add port representor device flag Declan Doherty
2018-04-24 19:37     ` Thomas Monjalon
2018-04-25 12:17       ` Doherty, Declan
2018-04-25 12:23         ` Thomas Monjalon
2018-04-16 13:06   ` [PATCH v7 5/9] app/testpmd: add port name to device info Declan Doherty
2018-04-16 13:06   ` [PATCH v7 6/9] ethdev: add common devargs parser Declan Doherty
2018-04-20 13:16     ` Ananyev, Konstantin
2018-04-24 19:53     ` Thomas Monjalon
2018-04-25  9:40       ` Remy Horton
2018-04-25 10:06         ` Thomas Monjalon
2018-04-25 10:45           ` Remy Horton
2018-04-16 13:06   ` [PATCH v7 7/9] ethdev: add switch domain allocator Declan Doherty
2018-04-20 13:22     ` Ananyev, Konstantin
2018-04-24 19:58     ` Thomas Monjalon
2018-04-16 13:06   ` [PATCH v7 8/9] net/i40e: add support for representor ports Declan Doherty
2018-04-16 13:06   ` [PATCH v7 9/9] net/ixgbe: " Declan Doherty
2018-04-20 13:29     ` Ananyev, Konstantin
2018-04-26 10:40   ` [dpdk=-dev][PATCH v8 0/9] switching devices representation Declan Doherty
2018-04-26 10:40     ` [PATCH v8 1/9] doc: add switch representation documentation Declan Doherty
2018-04-26 10:40     ` [PATCH v8 2/9] ethdev: add switch identifier parameter to port Declan Doherty
2018-04-26 12:02       ` Thomas Monjalon
2018-04-26 14:26         ` Thomas Monjalon
2018-04-27 16:29       ` Ferruh Yigit
2018-04-26 10:40     ` [PATCH v8 3/9] ethdev: add generic create/destroy ethdev APIs Declan Doherty
2018-04-26 12:16       ` Ferruh Yigit
2018-04-26 10:41     ` [PATCH v8 4/9] ethdev: Add port representor device flag Declan Doherty
2018-04-26 10:41     ` [PATCH v8 5/9] app/testpmd: add port name to device info Declan Doherty
2018-04-26 10:41     ` [PATCH v8 6/9] ethdev: add common devargs parser Declan Doherty
2018-04-26 12:03       ` Ananyev, Konstantin
2018-04-26 14:21         ` Ferruh Yigit
2018-04-26 14:28         ` Doherty, Declan
2018-04-26 14:44           ` Thomas Monjalon
2018-04-26 14:48           ` Ananyev, Konstantin
2018-04-26 14:30         ` Remy Horton
2018-04-26 12:15       ` Ferruh Yigit
2018-04-26 10:41     ` Declan Doherty [this message]
2018-04-26 12:27       ` [PATCH v8 7/9] ethdev: add switch domain allocator Ananyev, Konstantin
2018-04-26 10:41     ` [PATCH v8 8/9] net/i40e: add support for representor ports Declan Doherty
2018-04-26 10:41     ` [PATCH v8 9/9] net/ixgbe: " Declan Doherty
2018-04-26 16:24     ` [dpdk=-dev][PATCH v8 0/9] switching devices representation Ferruh Yigit
2018-04-26 16:35       ` Ferruh Yigit

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