[dpdk-dev] [PATCH v3 5/6] net/nfp: check hugepages IOVAs based on DMA mask
Alejandro Lucero
alejandro.lucero at netronome.com
Fri Oct 5 14:45:26 CEST 2018
NFP devices can not handle DMA addresses requiring more than
40 bits. This patch uses rte_dev_check_dma_mask with 40 bits
and avoids device initialization if memory out of NFP range.
Signed-off-by: Alejandro Lucero <alejandro.lucero at netronome.com>
---
drivers/net/nfp/nfp_net.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 170b5d6..3910980 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -2680,6 +2680,14 @@ uint32_t nfp_net_txq_full(struct nfp_net_txq *txq)
pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
+ /* NFP can not handle DMA addresses requiring more than 40 bits */
+ if (rte_eal_check_dma_mask(40)) {
+ RTE_LOG(ERR, PMD, "device %s can not be used:",
+ pci_dev->device.name);
+ RTE_LOG(ERR, PMD, "\trestricted dma mask to 40 bits!\n");
+ return -ENODEV;
+ };
+
if ((pci_dev->id.device_id == PCI_DEVICE_ID_NFP4000_PF_NIC) ||
(pci_dev->id.device_id == PCI_DEVICE_ID_NFP6000_PF_NIC)) {
port = get_pf_port_number(eth_dev->data->name);
--
1.9.1
More information about the dev
mailing list