package: add kmod-r8127 ethernet driver

r8127 is an out of tree driver provided by Realtek for RTL8127 devices.

Signed-off-by: Álvaro Fernández Rojas <[email protected]>
(cherry picked from commit 851ea69d8ebf4bdc80b29562123b96cd94387e9e)

package/kernel/r8127/Makefile

@@ -0,0 +1,47 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=r8127
+PKG_VERSION:=11.014.00
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
+PKG_SOURCE_URL:=https://github.com/openwrt/rtl8127/releases/download/$(PKG_VERSION)
+PKG_HASH:=f496bc16c32d2e8f9482c57d006604c70d9e8d55b4f1f999b88c602de9104094
+
+PKG_BUILD_PARALLEL:=1
+PKG_LICENSE:=GPLv2
+PKG_MAINTAINER:=Alvaro Fernandez Rojas <[email protected]>
+
+include $(INCLUDE_DIR)/kernel.mk
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/r8127
+  SUBMENU:=Network Devices
+  TITLE:=Realtek RTL8127 PCI 10 Gigabit Ethernet driver
+  DEPENDS:=@PCI_SUPPORT +kmod-libphy
+  FILES:=$(PKG_BUILD_DIR)/src/r8127.ko
+  AUTOLOAD:=$(call AutoProbe,r8127)
+  PROVIDES:=kmod-r8169
+  VARIANT:=regular
+endef
+
+define KernelPackage/r8127-rss
+$(call KernelPackage/r8127)
+  CONFLICTS:=kmod-r8127
+  TITLE+= (RSS)
+  VARIANT:=rss
+endef
+
+ifeq ($(BUILD_VARIANT),rss)
+  PKG_MAKE_FLAGS += ENABLE_RSS_SUPPORT=y
+endif
+
+define Build/Compile
+	+$(KERNEL_MAKE) $(PKG_JOBS) \
+		$(PKG_MAKE_FLAGS) \
+		M="$(PKG_BUILD_DIR)/src" \
+		modules
+endef
+
+$(eval $(call KernelPackage,r8127))
+$(eval $(call KernelPackage,r8127-rss))

package/kernel/r8127/patches/200-r8127-print-link-speed-and-duplex-mode.patch

@@ -0,0 +1,107 @@
+From 5ca1d47e065c0318774a946ffdf76010c78cc164 Mon Sep 17 00:00:00 2001
+From: Chukun Pan <[email protected]>
+Date: Sat, 10 Aug 2024 20:16:32 +0800
+Subject: [PATCH] r8127: print link speed and duplex mode
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Like other Ethernet drivers, print link speed and duplex mode
+when the interface is up. Formatting output at the same time.
+
+Signed-off-by: Chukun Pan <[email protected]>
+Signed-off-by: Álvaro Fernández Rojas <[email protected]>
+---
+ src/r8127.h   |  2 ++
+ src/r8127_n.c | 48 +++++++++++++++++++++++++++++++++++++++++++++---
+ 2 files changed, 47 insertions(+), 3 deletions(-)
+
+--- a/src/r8127.h
++++ b/src/r8127.h
+@@ -1753,6 +1753,11 @@ enum RTL8127_register_content {
+         LinkStatus = 0x02,
+         FullDup = 0x01,
+ 
++#define RTL8127_FULL_DUPLEX_MASK (_10000bpsF | _5000bpsF | _2500bpsF | _1000bpsF | FullDup)
++#define RTL8127_SPEED_1000_MASK (_1000bpsF | _1000bpsL | _2500bpsL)
++#define RTL8127_SPEED_2500_MASK (_2500bpsF | _5000bpsL)
++#define RTL8127_SPEED_5000_MASK (_5000bpsF | _10000bpsL)
++
+         /* DBG_reg */
+         Fix_Nak_1 = (1 << 4),
+         Fix_Nak_2 = (1 << 3),
+--- a/src/r8127_n.c
++++ b/src/r8127_n.c
+@@ -39,6 +39,7 @@
+ #include <linux/module.h>
+ #include <linux/version.h>
+ #include <linux/pci.h>
++#include <linux/phy.h>
+ #include <linux/netdevice.h>
+ #include <linux/etherdevice.h>
+ #include <linux/delay.h>
+@@ -4746,6 +4747,42 @@ rtl8127_link_down_patch(struct net_devic
+ #endif
+ }
+ 
++static unsigned int rtl8127_phy_duplex(u32 status)
++{
++        unsigned int duplex = DUPLEX_UNKNOWN;
++
++        if (status & LinkStatus) {
++                if (status & RTL8127_FULL_DUPLEX_MASK)
++                        duplex = DUPLEX_FULL;
++                else
++                        duplex = DUPLEX_HALF;
++        }
++
++        return duplex;
++}
++
++static int rtl8127_phy_speed(u32 status)
++{
++        int speed = SPEED_UNKNOWN;
++
++        if (status & LinkStatus) {
++                if (status & _10000bpsF)
++                        speed = SPEED_10000;
++                else if (status & RTL8127_SPEED_5000_MASK)
++                        speed = SPEED_5000;
++                else if (status & RTL8127_SPEED_2500_MASK)
++                        speed = SPEED_2500;
++                else if (status & RTL8127_SPEED_1000_MASK)
++                        speed = SPEED_1000;
++                else if (status & _100bps)
++                        speed = SPEED_100;
++                else if (status & _10bps)
++                        speed = SPEED_10;
++        }
++
++        return speed;
++}
++
+ static void
+ _rtl8127_check_link_status(struct net_device *dev, unsigned int link_state)
+ {
+@@ -4758,11 +4795,18 @@ _rtl8127_check_link_status(struct net_de
+         if (link_state == R8127_LINK_STATE_ON) {
+                 rtl8127_link_on_patch(dev);
+ 
+-                if (netif_msg_ifup(tp))
+-                        printk(KERN_INFO PFX "%s: link up\n", dev->name);
++                if (netif_msg_ifup(tp)) {
++                        const u32 phy_status = RTL_R32(tp, PHYstatus);
++                        const unsigned int phy_duplex = rtl8127_phy_duplex(phy_status);
++                        const int phy_speed = rtl8127_phy_speed(phy_status);
++                        printk(KERN_INFO PFX "%s: Link is Up - %s/%s\n",
++                                dev->name,
++                                phy_speed_to_str(phy_speed),
++                                phy_duplex_to_str(phy_duplex));
++                }
+         } else {
+                 if (netif_msg_ifdown(tp))
+-                        printk(KERN_INFO PFX "%s: link down\n", dev->name);
++                        printk(KERN_INFO PFX "%s: Link is Down\n", dev->name);
+ 
+                 rtl8127_link_down_patch(dev);
+         }