05/05/2020 13:19, Renata Saiakhova:
> Hi Thomas,
>
> In our application dpdk port can be connected and disconnected:
>
> Connect:
> new_port_id = netdev_dpdk_get_port_by_devargs(dpdk_port->pci_addr_str);
>
> if (!rte_eth_dev_is_valid_port(new_port_id)) {
> /* Device not found in DPDK, attempt to attach it */
> if (rte_dev_probe(dpdk_port->pci_addr_str)) {
> new_port_id = DPDK_ETH_PORT_ID_INVALID;
> } else {
> new_port_id =
> netdev_dpdk_get_port_by_devargs(dpdk_port->pci_addr_str);
> if (rte_eth_dev_is_valid_port(new_port_id)) {
> LO_TRACE("Device '%s' attached to DPDK", dpdk_port->pci_addr_str);
> } else {
> /* Attach unsuccessful */
> new_port_id = DPDK_ETH_PORT_ID_INVALID;
> }
> }
> }
>
> Disconnect:
>
> dp_ConfigureRxQueues(dpdk_port, FALSE);
> rte_eth_dev_set_link_down(port_id);
> rte_eth_dev_stop(port_id);
> rte_eth_dev_close(port_id);
>
> and yes, exactly, port id is recycled by eth_dev. Next time, switching from
> igb port to ixgbe with the same port and using HW rings of bigger size for
> ixgbe creates memory corruption.
I see.
Reusing the same rings for a new port seems really wrong indeed.
Please check if same issue must be fixed in other PMDs.
