[PATCH v8 2/9] ethdev: add switch identifier parameter to port

[Declan Doherty <declan.doherty@intel.com>]

Introduces a new port attribute to ethdev port's which denotes the
switch domain a port belongs to. By default all port's switch
identifiers are set to RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID. Ports
which supported the concept of switch domains can be configured with
the same switch domain id.

Signed-off-by: Declan Doherty <declan.doherty@intel.com>
---
 app/test-pmd/config.c         | 12 ++++++++++++
 lib/librte_ether/rte_ethdev.h | 27 +++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 216a7eb4e..26f416100 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -517,6 +517,18 @@ port_infos_display(portid_t port_id)
 	printf("Min possible number of TXDs per queue: %hu\n",
 		dev_info.tx_desc_lim.nb_min);
 	printf("TXDs number alignment: %hu\n", dev_info.tx_desc_lim.nb_align);
+
+	/* Show switch info only if valid switch domain and port id is set */
+	if (dev_info.switch_info.domain_id !=
+		RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
+		if (dev_info.switch_info.name)
+			printf("Switch name: %s\n", dev_info.switch_info.name);
+
+		printf("Switch domain Id: %u\n",
+			dev_info.switch_info.domain_id);
+		printf("Switch Port Id: %u\n",
+			dev_info.switch_info.port_id);
+	}
 }
 
 void
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index efd84bb7b..06d9b288b 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -1026,6 +1026,28 @@ struct rte_eth_dev_portconf {
 	uint16_t nb_queues; /**< Device-preferred number of queues */
 };
 
+/**
+ * Default values for switch domain id when ethdev does not support switch
+ * domain definitions.
+ */
+#define RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID	(0)
+
+/**
+ * Ethernet device associated switch information
+ */
+struct rte_eth_switch_info {
+	const char *name;	/**< switch name */
+	uint16_t domain_id;	/**< switch domain id */
+	uint16_t port_id;
+	/**<
+	 * mapping to the devices physical switch port as enumerated from the
+	 * perspective of the embedded interconnect/switch. For SR-IOV enabled
+	 * device this may correspond to the VF_ID of each virtual function,
+	 * but each driver should explicitly define the mapping of switch
+	 * port identifier to that physical interconnect/switch
+	 */
+};
+
 /**
  * Ethernet device information
  */
@@ -1073,6 +1095,11 @@ struct rte_eth_dev_info {
 	struct rte_eth_dev_portconf default_txportconf;
 	/** Generic device capabilities (RTE_ETH_DEV_CAPA_). */
 	uint64_t dev_capa;
+	/**
+	 * Switching information for ports on a device with a
+	 * embedded managed interconnect/switch.
+	 */
+	struct rte_eth_switch_info switch_info;
 };
 
 /**
-- 
2.14.3