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ethdev: get queues numbers

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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@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
This commit is contained in:
Reshma Pattan 2016-06-15 15:06:20 +01:00 committed by Thomas Monjalon
parent c8231c63dd
commit 00851d47f7
3 changed files with 11 additions and 0 deletions
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6
doc/guides/rel_notes/release_16_07.rst
View File

@ -148,6 +148,9 @@ API Changes
* The extended statistics are fetched by ids with ``rte_eth_xstats_get``
after a lookup by name ``rte_eth_xstats_get_names``.
* The function ``rte_eth_dev_info_get`` fill the new fields ``nb_rx_queues``
and ``nb_tx_queues`` in the structure ``rte_eth_dev_info``.
ABI Changes
-----------
@ -159,6 +162,9 @@ 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
-----------------------

2
lib/librte_ether/rte_ethdev.c
View File

@ -1735,6 +1735,8 @@ 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

3
lib/librte_ether/rte_ethdev.h
View File

@ -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. */
};
/**