[dpdk-dev] [PATCH 2/3] eth_dev: add support for device dma mask

[Alejandro Lucero <alejandro.lucero@netronome.com>]

 - New dma_mask field in rte_eth_dev_data.
 - If PMD sets device dma_mask, call to check hugepages within
   supported range.

Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
---
 lib/librte_ether/rte_ethdev.c | 7 +++++++
 lib/librte_ether/rte_ethdev.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index a31018e..c0de88a 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -280,9 +280,16 @@ rte_eth_dev_init(struct rte_pci_driver *pci_drv,
 
 	/* Invoke PMD device initialization function */
 	diag = (*eth_drv->eth_dev_init)(eth_dev);
+	if (diag)
+		goto err;
+
+	if (eth_dev->data->dma_mask)
+		diag = rte_eal_hugepage_check_address_mask(eth_dev->data->dma_mask);
+
 	if (diag == 0)
 		return 0;
 
+err:
 	RTE_PMD_DEBUG_TRACE("driver %s: eth_dev_init(vendor_id=0x%u device_id=0x%x) failed\n",
 			pci_drv->name,
 			(unsigned) pci_dev->id.vendor_id,
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 2757510..34daa92 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -1675,6 +1675,7 @@ struct rte_eth_dev_data {
 	enum rte_kernel_driver kdrv;    /**< Kernel driver passthrough */
 	int numa_node;  /**< NUMA node connection */
 	const char *drv_name;   /**< Driver name */
+	uint64_t dma_mask; /** device supported address space range */
 };
 
 /** Device supports hotplug detach */
-- 
1.9.1