On 03/10, Haiyue Wang wrote:
>A new DCF PMD will be introduced, which runs on Intel VF hardware, and
>it is a pure software design to control the advance functionality (such
>as switch, ACL) for rest of the VFs.
>
>So if the DCF (Device Config Function) mode is specified by the devarg
>'cap=dcf', then it will stop the PCI probe in the iavf PMD.
>
>Signed-off-by: Haiyue Wang <haiyue.w...@intel.com>
>---
> drivers/net/iavf/iavf_ethdev.c | 43 ++++++++++++++++++++++++++++++++++
> 1 file changed, 43 insertions(+)
>
>diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
>index 34913f9c4..c0b95e169 100644
>--- a/drivers/net/iavf/iavf_ethdev.c
>+++ b/drivers/net/iavf/iavf_ethdev.c
>@@ -1416,9 +1416,51 @@ iavf_dev_uninit(struct rte_eth_dev *dev)
> return 0;
> }
>
>+static int
>+iavf_dcf_cap_check_handler(__rte_unused const char *key,
>+ const char *value, __rte_unused void *opaque)
>+{
>+ if (strcmp(value, "dcf"))
>+ return -1;
>+
>+ return 0;
>+}
>+
>+static int
>+iavf_dcf_cap_selected(struct rte_devargs *devargs)
>+{
>+ struct rte_kvargs *kvlist;
>+ const char *key = "cap";
>+ int ret = 0;
>+
>+ if (devargs == NULL)
>+ return 0;
>+
>+ kvlist = rte_kvargs_parse(devargs->args, NULL);
>+ if (kvlist == NULL)
>+ return 0;
>+
>+ if (!rte_kvargs_count(kvlist, key))
>+ goto exit;
>+
>+ /* dcf capability selected when there's a key-value pair: cap=dcf */
>+ if (rte_kvargs_process(kvlist, key,
>+ iavf_dcf_cap_check_handler, NULL) < 0)
>+ goto exit;
>+
>+ ret = 1;
>+
>+exit:
>+ rte_kvargs_free(kvlist);
>+ return ret;
>+}
>+
> static int eth_iavf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
> struct rte_pci_device *pci_dev)
> {
>+ if (iavf_dcf_cap_selected(pci_dev->device.devargs))
>+ return 1;
>+
> return rte_eth_dev_pci_generic_probe(pci_dev,
> sizeof(struct iavf_adapter), iavf_dev_init);
> }
>@@ -1439,6 +1481,7 @@ static struct rte_pci_driver rte_iavf_pmd = {
> RTE_PMD_REGISTER_PCI(net_iavf, rte_iavf_pmd);
> RTE_PMD_REGISTER_PCI_TABLE(net_iavf, pci_id_iavf_map);
> RTE_PMD_REGISTER_KMOD_DEP(net_iavf, "* igb_uio | vfio-pci");
>+RTE_PMD_REGISTER_PARAM_STRING(net_iavf, "cap=dcf");
> RTE_INIT(iavf_init_log)
> {
> iavf_logtype_init = rte_log_register("pmd.net.iavf.init");
>--
>2.25.1
>
Reviewed-by: Xiaolong Ye <xiaolong...@intel.com>
