[dpdk-dev] [PATCH v10 3/7] ethdev: add new fields to ethdev info struct

[Reshma Pattan]

The new fields nb_rx_queues and nb_tx_queues are added to the
rte_eth_dev_info structure.
Changes to API rte_eth_dev_info_get() are done to update these new fields
to the rte_eth_dev_info object.
Release notes is updated with the changes.

The librte_pdump library needs to register Rx and Tx callbacks for all
the nb_rx_queues and nb_tx_queues, when application wants to capture the
packets on all the software configured number of Rx and Tx queues of the
device. So far there is no support to get nb_rx_queues and nb_tx_queues
information from the ethdev library. Hence these changes are introduced.

Signed-off-by: Reshma Pattan <reshma.pattan at intel.com>
---
 doc/guides/rel_notes/release_16_07.rst | 6 ++++++
 lib/librte_ether/rte_ethdev.c          | 2 ++
 lib/librte_ether/rte_ethdev.h          | 3 +++
 lib/librte_ether/rte_ether_version.map | 1 +
 4 files changed, 12 insertions(+)

diff --git a/doc/guides/rel_notes/release_16_07.rst b/doc/guides/rel_notes/release_16_07.rst
index c0f6b02..004ecee 100644
--- a/doc/guides/rel_notes/release_16_07.rst
+++ b/doc/guides/rel_notes/release_16_07.rst
@@ -135,6 +135,9 @@ API Changes
   ibadcrc, ibadlen, imcasts, fdirmatch, fdirmiss,
   tx_pause_xon, rx_pause_xon, tx_pause_xoff, rx_pause_xoff.
 
+* Function ``rte_eth_dev_info_get`` updated to return new fields ``nb_rx_queues`` and ``nb_tx_queues``
+  in the ``rte_eth_dev_info`` object.
+
 
 ABI Changes
 -----------
@@ -146,6 +149,9 @@ ABI Changes
 * The ``rte_port_source_params`` structure has new fields to support PCAP file.
   It was already in release 16.04 with ``RTE_NEXT_ABI`` flag.
 
+* The ``rte_eth_dev_info`` structure has new fields ``nb_rx_queues`` and ``nb_tx_queues``
+  to support number of queues configured by software.
+
 
 Shared Library Versions
 -----------------------
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 97d167e..1f634c9 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -1661,6 +1661,8 @@ rte_eth_dev_info_get(uint8_t port_id, struct rte_eth_dev_info *dev_info)
 	(*dev->dev_ops->dev_infos_get)(dev, dev_info);
 	dev_info->pci_dev = dev->pci_dev;
 	dev_info->driver_name = dev->data->drv_name;
+	dev_info->nb_rx_queues = dev->data->nb_rx_queues;
+	dev_info->nb_tx_queues = dev->data->nb_tx_queues;
 }
 
 int
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 237e6ef..8ad7c01 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -882,6 +882,9 @@ struct rte_eth_dev_info {
 	struct rte_eth_desc_lim rx_desc_lim;  /**< RX descriptors limits */
 	struct rte_eth_desc_lim tx_desc_lim;  /**< TX descriptors limits */
 	uint32_t speed_capa;  /**< Supported speeds bitmap (ETH_LINK_SPEED_). */
+	/** Configured number of rx/tx queues */
+	uint16_t nb_rx_queues; /**< Number of RX queues. */
+	uint16_t nb_tx_queues; /**< Number of TX queues. */
 };
 
 /**
diff --git a/lib/librte_ether/rte_ether_version.map b/lib/librte_ether/rte_ether_version.map
index c990b04..d06d648 100644
--- a/lib/librte_ether/rte_ether_version.map
+++ b/lib/librte_ether/rte_ether_version.map
@@ -137,4 +137,5 @@ DPDK_16.07 {
 	global:
 
 	rte_eth_add_first_rx_callback;
+	rte_eth_dev_info_get;
 } DPDK_16.04;
-- 
2.5.0