[dpdk-dev] [PATCH v4 3/6] net/ngbe: support probe and remove

[Jiawen Wu]

Add basic PCIe ethdev probe and remove.

Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
 doc/guides/nics/features/ngbe.ini |  1 +
 drivers/net/ngbe/ngbe_ethdev.c    | 77 +++++++++++++++++++++++++++++--
 drivers/net/ngbe/ngbe_ethdev.h    | 10 ++++
 3 files changed, 85 insertions(+), 3 deletions(-)

diff --git a/doc/guides/nics/features/ngbe.ini 
b/doc/guides/nics/features/ngbe.ini
index a7a524def..977286ac0 100644
--- a/doc/guides/nics/features/ngbe.ini
+++ b/doc/guides/nics/features/ngbe.ini
@@ -4,6 +4,7 @@
 ; Refer to default.ini for the full list of available PMD features.
 ;
 [Features]
+Multiprocess aware   = Y
 Linux                = Y
 ARMv8                = Y
 x86-32               = Y
diff --git a/drivers/net/ngbe/ngbe_ethdev.c b/drivers/net/ngbe/ngbe_ethdev.c
index da951b6ef..d938fd68a 100644
--- a/drivers/net/ngbe/ngbe_ethdev.c
+++ b/drivers/net/ngbe/ngbe_ethdev.c
@@ -1,10 +1,12 @@
- /* SPDX-License-Identifier: BSD-3-Clause
-  * Copyright(c) 2018-2020
-  */
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018-2020
+ */
 
+#include <rte_common.h>
 #include <ethdev_pci.h>
 
 #include <base/ngbe_devids.h>
+#include "ngbe_ethdev.h"
 
 /*
  * The set of PCI devices this driver supports
@@ -25,10 +27,79 @@ static const struct rte_pci_id pci_id_ngbe_map[] = {
        { .vendor_id = 0, /* sentinel */ },
 };
 
+static int
+eth_ngbe_dev_init(struct rte_eth_dev *eth_dev, void *init_params __rte_unused)
+{
+       struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
+
+       if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+               return 0;
+
+       rte_eth_copy_pci_info(eth_dev, pci_dev);
+
+       return 0;
+}
+
+static int
+eth_ngbe_dev_uninit(struct rte_eth_dev *eth_dev)
+{
+       if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+               return 0;
+
+       RTE_SET_USED(eth_dev);
+
+       return 0;
+}
+
+static int
+eth_ngbe_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
+               struct rte_pci_device *pci_dev)
+{
+       struct rte_eth_dev *pf_ethdev;
+       struct rte_eth_devargs eth_da;
+       int retval;
+
+       if (pci_dev->device.devargs) {
+               retval = rte_eth_devargs_parse(pci_dev->device.devargs->args,
+                               &eth_da);
+               if (retval)
+                       return retval;
+       } else {
+               memset(&eth_da, 0, sizeof(eth_da));
+       }
+
+       retval = rte_eth_dev_create(&pci_dev->device, pci_dev->device.name,
+                       sizeof(struct ngbe_adapter),
+                       eth_dev_pci_specific_init, pci_dev,
+                       eth_ngbe_dev_init, NULL);
+
+       if (retval || eth_da.nb_representor_ports < 1)
+               return retval;
+
+       pf_ethdev = rte_eth_dev_allocated(pci_dev->device.name);
+       if (pf_ethdev == NULL)
+               return -ENODEV;
+
+       return 0;
+}
+
+static int eth_ngbe_pci_remove(struct rte_pci_device *pci_dev)
+{
+       struct rte_eth_dev *ethdev;
+
+       ethdev = rte_eth_dev_allocated(pci_dev->device.name);
+       if (!ethdev)
+               return -ENODEV;
+
+       return rte_eth_dev_destroy(ethdev, eth_ngbe_dev_uninit);
+}
+
 static struct rte_pci_driver rte_ngbe_pmd = {
        .id_table = pci_id_ngbe_map,
        .drv_flags = RTE_PCI_DRV_NEED_MAPPING |
                     RTE_PCI_DRV_INTR_LSC,
+       .probe = eth_ngbe_pci_probe,
+       .remove = eth_ngbe_pci_remove,
 };
 
 RTE_PMD_REGISTER_PCI(net_ngbe, rte_ngbe_pmd);
diff --git a/drivers/net/ngbe/ngbe_ethdev.h b/drivers/net/ngbe/ngbe_ethdev.h
index 20f37e9d4..8dab39faf 100644
--- a/drivers/net/ngbe/ngbe_ethdev.h
+++ b/drivers/net/ngbe/ngbe_ethdev.h
@@ -2,3 +2,13 @@
  * Copyright(c) 2018-2020
  */
 
+#ifndef _NGBE_ETHDEV_H_
+#define _NGBE_ETHDEV_H_
+
+/*
+ * Structure to store private data for each driver instance (for each port).
+ */
+struct ngbe_adapter {
+};
+
+#endif /* _NGBE_ETHDEV_H_ */
-- 
2.21.0.windows.1