[v7,01/17] net/r8169: add PMD driver skeleton

diff --git a/MAINTAINERS b/MAINTAINERS
index 9a812b3632..f68cf48a9d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -995,6 +995,14 @@  F: drivers/net/qede/
 F: doc/guides/nics/qede.rst
 F: doc/guides/nics/features/qede*.ini
 
+Realtek r8169
+M: Howard Wang <howard_wang@realsil.com.cn>
+M: ChunHao Lin <hau@realtek.com>
+M: Xing Wang <xing_wang@realsil.com.cn>
+F: drivers/net/r8169
+F: doc/guides/nics/r8169.rst
+F: doc/guides/nics/features/r8169.ini
+
 Solarflare sfc_efx
 M: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
 F: drivers/common/sfc_efx/
diff --git a/doc/guides/nics/features/r8169.ini b/doc/guides/nics/features/r8169.ini
new file mode 100644
index 0000000000..dd1ce4db5c
--- /dev/null
+++ b/doc/guides/nics/features/r8169.ini
@@ -0,0 +1,9 @@ 
+;
+; Supported features of the 'r8169' network poll mode driver.
+;
+; Refer to default.ini for the full list of available PMD features.
+;
+[Features]
+Linux                = Y
+x86-32               = Y
+x86-64               = Y
diff --git a/doc/guides/nics/index.rst b/doc/guides/nics/index.rst
index 8e371ac4a5..50688d9f64 100644
--- a/doc/guides/nics/index.rst
+++ b/doc/guides/nics/index.rst
@@ -60,6 +60,7 @@  Network Interface Controller Drivers
     pcap_ring
     pfe
     qede
+    r8169
     sfc_efx
     softnic
     tap
diff --git a/doc/guides/nics/r8169.rst b/doc/guides/nics/r8169.rst
new file mode 100644
index 0000000000..071aebcdbf
--- /dev/null
+++ b/doc/guides/nics/r8169.rst
@@ -0,0 +1,19 @@ 
+..  SPDX-License-Identifier: BSD-3-Clause
+    Copyright(c) 2024 Realtek Corporation. All rights reserved
+
+R8169 Poll Mode Driver
+======================
+
+The R8169 PMD provides poll mode driver support for Realtek 2.5 and 5 Gigabit
+Ethernet NICs.
+
+More information about Realtek 2.5G Ethernet NIC can be found at `RTL8125
+<https://www.realtek.com/Product/Index?id=3962&cate_id=786&menu_id=1010>`_.
+More information about Realtek 5G Ethernet NIC can be found at `RTL8126
+<https://www.realtek.com/Product/ProductHitsDetail?id=4425&menu_id=643>`_.
+
+Supported Chipsets and NICs
+---------------------------
+
+- Realtek RTL8125 2.5 Gigabit Ethernet Controller
+- Realtek RTL8126 5 Gigabit Ethernet Controller
diff --git a/doc/guides/rel_notes/release_24_11.rst b/doc/guides/rel_notes/release_24_11.rst
index 66b970e036..2393db1e54 100644
--- a/doc/guides/rel_notes/release_24_11.rst
+++ b/doc/guides/rel_notes/release_24_11.rst
@@ -219,6 +219,11 @@  New Features
 
   * Added support for DMA queue priority configuration.
 
+* **Added Realtek network PMD.**
+
+  Added a new network PMD which supports Realtek 2.5 and 5 Gigabit
+  Ethernet NICs.
+
 * **Added event device pre-scheduling support.**
 
   Added support for pre-scheduling of events to event ports
diff --git a/drivers/net/meson.build b/drivers/net/meson.build
index 0a12914534..dafd637ba4 100644
--- a/drivers/net/meson.build
+++ b/drivers/net/meson.build
@@ -52,6 +52,7 @@  drivers = [
         'pcap',
         'pfe',
         'qede',
+        'r8169',
         'ring',
         'sfc',
         'softnic',
diff --git a/drivers/net/r8169/meson.build b/drivers/net/r8169/meson.build
new file mode 100644
index 0000000000..a49d350bf5
--- /dev/null
+++ b/drivers/net/r8169/meson.build
@@ -0,0 +1,6 @@ 
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2024 Realtek Corporation. All rights reserved
+
+sources = files(
+        'r8169_ethdev.c',
+)
diff --git a/drivers/net/r8169/r8169_compat.h b/drivers/net/r8169/r8169_compat.h
new file mode 100644
index 0000000000..e337ce3afa
--- /dev/null
+++ b/drivers/net/r8169/r8169_compat.h
@@ -0,0 +1,17 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 Realtek Corporation. All rights reserved
+ */
+
+#ifndef _R8169_COMPAT_H_
+#define _R8169_COMPAT_H_
+
+#include <stdint.h>
+
+typedef uint8_t   u8;
+typedef uint16_t  u16;
+typedef uint32_t  u32;
+typedef uint64_t  u64;
+
+#define PCI_VENDOR_ID_REALTEK 0x10EC
+
+#endif
diff --git a/drivers/net/r8169/r8169_ethdev.c b/drivers/net/r8169/r8169_ethdev.c
new file mode 100644
index 0000000000..740f7957be
--- /dev/null
+++ b/drivers/net/r8169/r8169_ethdev.c
@@ -0,0 +1,147 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 Realtek Corporation. All rights reserved
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+
+#include <rte_eal.h>
+
+#include <rte_common.h>
+#include <rte_pci.h>
+#include <bus_pci_driver.h>
+#include <rte_ether.h>
+#include <ethdev_driver.h>
+#include <ethdev_pci.h>
+#include <dev_driver.h>
+
+#include "r8169_ethdev.h"
+#include "r8169_compat.h"
+
+static int rtl_dev_configure(struct rte_eth_dev *dev);
+static int rtl_dev_start(struct rte_eth_dev *dev);
+static int rtl_dev_stop(struct rte_eth_dev *dev);
+static int rtl_dev_reset(struct rte_eth_dev *dev);
+static int rtl_dev_close(struct rte_eth_dev *dev);
+
+/*
+ * The set of PCI devices this driver supports
+ */
+static const struct rte_pci_id pci_id_r8169_map[] = {
+	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8125) },
+	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8162) },
+	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8126) },
+	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x5000) },
+	{.vendor_id = 0, /* sentinel */ },
+};
+
+static const struct eth_dev_ops rtl_eth_dev_ops = {
+	.dev_configure	      = rtl_dev_configure,
+	.dev_start	      = rtl_dev_start,
+	.dev_stop	      = rtl_dev_stop,
+	.dev_close	      = rtl_dev_close,
+	.dev_reset	      = rtl_dev_reset,
+};
+
+static int
+rtl_dev_configure(struct rte_eth_dev *dev __rte_unused)
+{
+	return 0;
+}
+
+/*
+ * Configure device link speed and setup link.
+ * It returns 0 on success.
+ */
+static int
+rtl_dev_start(struct rte_eth_dev *dev  __rte_unused)
+{
+	return 0;
+}
+
+/*
+ * Stop device: disable RX and TX functions to allow for reconfiguring.
+ */
+static int
+rtl_dev_stop(struct rte_eth_dev *dev  __rte_unused)
+{
+	return 0;
+}
+
+/*
+ * Reset and stop device.
+ */
+static int
+rtl_dev_close(struct rte_eth_dev *dev)
+{
+	int ret_stp;
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	ret_stp = rtl_dev_stop(dev);
+
+	return ret_stp;
+}
+
+static int
+rtl_dev_init(struct rte_eth_dev *dev)
+{
+	dev->dev_ops = &rtl_eth_dev_ops;
+
+	/* For secondary processes, the primary process has done all the work */
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	return 0;
+}
+
+static int
+rtl_dev_uninit(struct rte_eth_dev *dev)
+{
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return -EPERM;
+
+	rtl_dev_close(dev);
+
+	return 0;
+}
+
+static int
+rtl_dev_reset(struct rte_eth_dev *dev)
+{
+	int ret;
+
+	ret = rtl_dev_uninit(dev);
+	if (ret)
+		return ret;
+
+	ret = rtl_dev_init(dev);
+
+	return ret;
+}
+
+static int
+rtl_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
+	      struct rte_pci_device *pci_dev)
+{
+	return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct rtl_adapter),
+					     rtl_dev_init);
+}
+
+static int
+rtl_pci_remove(struct rte_pci_device *pci_dev)
+{
+	return rte_eth_dev_pci_generic_remove(pci_dev, rtl_dev_uninit);
+}
+
+static struct rte_pci_driver rte_r8169_pmd = {
+	.id_table  = pci_id_r8169_map,
+	.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
+	.probe     = rtl_pci_probe,
+	.remove    = rtl_pci_remove,
+};
+
+RTE_PMD_REGISTER_PCI(net_r8169, rte_r8169_pmd);
+RTE_PMD_REGISTER_PCI_TABLE(net_r8169, pci_id_r8169_map);
+RTE_PMD_REGISTER_KMOD_DEP(net_r8169, "* igb_uio | uio_pci_generic | vfio-pci");
diff --git a/drivers/net/r8169/r8169_ethdev.h b/drivers/net/r8169/r8169_ethdev.h
new file mode 100644
index 0000000000..93d8c48e99
--- /dev/null
+++ b/drivers/net/r8169/r8169_ethdev.h
@@ -0,0 +1,28 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 Realtek Corporation. All rights reserved
+ */
+
+#ifndef _R8169_ETHDEV_H_
+#define _R8169_ETHDEV_H_
+
+#include <stdint.h>
+
+#include <rte_ethdev.h>
+#include <rte_ethdev_core.h>
+
+#include "r8169_compat.h"
+
+struct rtl_sw_stats {
+	u64 tx_packets;
+	u64 tx_bytes;
+	u64 tx_errors;
+	u64 rx_packets;
+	u64 rx_bytes;
+	u64 rx_errors;
+};
+
+struct rtl_adapter {
+	struct rtl_sw_stats sw_stats;
+};
+
+#endif