Arch Linux User Repository

the r8125 actually works fine without this specific driver. In my case package r8168 was blacklisting r8169 which supports the r8125.

Last version: 9.009.02

I git/clone source repo, then update PKGBUILD:

# Maintainer: Bernd Amend <bernd.amend(at)gmail(dot)com>
# Contributor: Alex Avance <aravance(at)gmail(dot)com>
# Contributor: Shen-Ta Hsieh <ibmibmibm(at)gmail(dot)com>

_pkgname=r8125
pkgname=${_pkgname}-dkms
#pkgver=9.009.00
pkgver=9.009.02
pkgrel=1
url="https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software"
pkgdesc="Kernel module for RTL8125"
license=('GPL2')
arch=('any')
depends=('dkms')
conflicts=("${_pkgname}")
optdepends=('linux-headers: Build the module for Arch kernel'
            'linux-lts-headers: Build the module for LTS Arch kernel')
source=("http://rtitwww.realtek.com/rtdrivers/cn/nic1/${_pkgname}-${pkgver}.tar.bz2" 'dkms.conf')
#sha256sums=('1f73d1b84372b82efa091eca5075b34ff622bf7f4385dc16359d1be828f54b14'
#            'ad4c67e0c74661d19b74872f98254184d4b04e32e4c57b338a84fbcefa4c721f')
sha256sums=('5e4ba4ca0d0ee21df47e2e3c9fe941119b9407dd083f9c169023c4177b9db80e'
            'ad4c67e0c74661d19b74872f98254184d4b04e32e4c57b338a84fbcefa4c721f')

package() {
  dir_name="${_pkgname}-${pkgver}"
  install -d "${pkgdir}"/usr/src/${dir_name}/
  install -Dm644 dkms.conf "${dir_name}"/src/* "${pkgdir}/usr/src/${dir_name}/"

  sed -e "s/@_PKGNAME@/${_pkgname}/g" \
      -e "s/@PKGVER@/${pkgver}/g" \
      -i "${pkgdir}/usr/src/${dir_name}/dkms.conf"

Then...

makepkg --syncdeps -f && makepkg --install

See you on next reboot :)

Thank you for providing the patch!

I hope that ptb gets around to fixing this package. In the meantime I created an aur package simply called r8125 wich is basically the same as the r8168 package in community just for the r8125 device.

this dkms is now required? or I can use kernel driver.

Add a patch file to make the driver work with 5.18 kernel. Also added linux-zen-headers as optional dependency.

diff --git a/5.18.patch b/5.18.patch
new file mode 100644
index 0000000..d4db6fc
--- /dev/null
+++ b/5.18.patch
@@ -0,0 +1,17 @@
+--- r8125_n.org.c  2022-06-02 01:43:21.746116107 +0200
++++ r8125_n.c  2022-06-02 01:38:14.408257684 +0200
+@@ -11952,11 +11952,11 @@
+ 
+         if ((sizeof(dma_addr_t) > 4) &&
+             use_dac &&
+-            !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
+-            !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
++            !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
++            !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
+                 dev->features |= NETIF_F_HIGHDMA;
+         } else {
+-                rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
++                rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+                 if (rc < 0) {
+ #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
+                         if (netif_msg_probe(tp))
diff --git a/PKGBUILD b/PKGBUILD
index 159f45e..16442c1 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -4,7 +4,7 @@

_pkgname=r8125
pkgname=${_pkgname}-dkms
-pkgver=9.009.00
+pkgver=9.009.01
pkgrel=1
url="https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software"
pkgdesc="Kernel module for RTL8125"
@@ -12,11 +12,24 @@ license=('GPL2')
arch=('any')
depends=('dkms')
conflicts=("${_pkgname}")
+
optdepends=('linux-headers: Build the module for Arch kernel'
-            'linux-lts-headers: Build the module for LTS Arch kernel')
-source=("http://rtitwww.realtek.com/rtdrivers/cn/nic1/${_pkgname}-${pkgver}.tar.bz2" 'dkms.conf')
-sha256sums=('1f73d1b84372b82efa091eca5075b34ff622bf7f4385dc16359d1be828f54b14'
-            'ad4c67e0c74661d19b74872f98254184d4b04e32e4c57b338a84fbcefa4c721f')
+            'linux-lts-headers: Build the module for LTS Arch kernel'
+            'linux-zen-headers: Build the module for Arch kernel')
+source=("http://rtitwww.realtek.com/rtdrivers/cn/nic1/${_pkgname}-${pkgver}.tar.bz2"
+        'dkms.conf'
+        '5.18.patch')
+sha256sums=('1bfc5b43a98c7b800fce4885d85e8f7eb4a9f3a245fd0f55eb3912634c2a04ff'
+            'ad4c67e0c74661d19b74872f98254184d4b04e32e4c57b338a84fbcefa4c721f'
+            'b0cbf6d1bc392846c72f479947cf70ec186c4e2c4cd0b6668580eed02aba02ad')
+
+prepare() {
+  dir_name="${_pkgname}-${pkgver}"
+  org_path=`pwd`
+  cd "${dir_name}"/src/
+  patch <"${org_path}"/5.18.patch
+  cd "${org_path}"
+}

package() {
  dir_name="${_pkgname}-${pkgver}"

This stopped working for me after I upgraded to kernel 5.18. The default r8169 driver seems to be working now though, in case anyone else has blacklisted it like I did.

The previous patch is incomplete and not fully correct. The better patch:

Compatibility with Linux Kernel 5.17+.

diff --git a/src/r8125_n.c b/src/r8125_n.c
--- a/src/r8125_n.c
+++ b/src/r8125_n.c
@@ -349,7 +349,7 @@ static int rtl8125_change_mtu(struct net_device *dev, int new_mtu);
 static void rtl8125_down(struct net_device *dev);

 static int rtl8125_set_mac_address(struct net_device *dev, void *p);
-static void rtl8125_rar_set(struct rtl8125_private *tp, uint8_t *addr);
+static void rtl8125_rar_set(struct rtl8125_private *tp, const uint8_t *addr);
 static void rtl8125_desc_addr_fill(struct rtl8125_private *);
 static void rtl8125_tx_desc_init(struct rtl8125_private *tp);
 static void rtl8125_rx_desc_init(struct rtl8125_private *tp);
@@ -1750,7 +1750,13 @@ static void rtl8125_proc_module_init(void)
 static int rtl8125_proc_open(struct inode *inode, struct file *file)
 {
         struct net_device *dev = proc_get_parent_data(inode);
-        int (*show)(struct seq_file *, void *) = PDE_DATA(inode);
+        int (*show)(struct seq_file *, void *) =
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,17,0)
+            PDE_DATA(inode);
+#else
+            pde_data(inode);
+#endif
+

         return single_open(file, show, dev);
 }
@@ -5234,8 +5240,15 @@ rtl8125_set_ring_size(struct rtl8125_private *tp, u32 rx, u32 tx)
 }

 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,17,0)
 static void rtl8125_get_ringparam(struct net_device *dev,
                                   struct ethtool_ringparam *ring)
+#else
+static void rtl8125_get_ringparam(struct net_device* dev,
+                                  struct ethtool_ringparam* ring,
+                                  struct kernel_ethtool_ringparam* kernel_ring,
+                                  struct netlink_ext_ack* extack)
+#endif
 {
         struct rtl8125_private *tp = netdev_priv(dev);

@@ -5245,8 +5258,15 @@ static void rtl8125_get_ringparam(struct net_device *dev,
         ring->tx_pending = tp->tx_ring[0].num_tx_desc;
 }

+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,17,0)
 static int rtl8125_set_ringparam(struct net_device *dev,
                                  struct ethtool_ringparam *ring)
+#else
+static int rtl8125_set_ringparam(struct net_device* dev,
+                                 struct ethtool_ringparam* ring,
+                                 struct kernel_ethtool_ringparam* kernel_ring,
+                                 struct netlink_ext_ack* extack)
+#endif
 {
         struct rtl8125_private *tp = netdev_priv(dev);
         u32 new_rx_count, new_tx_count;
@@ -10889,6 +10909,9 @@ rtl8125_get_mac_address(struct net_device *dev)
         struct rtl8125_private *tp = netdev_priv(dev);
         int i;
         u8 mac_addr[MAC_ADDR_LEN];
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,17,0)
+        u8 addr[ETH_ALEN];
+#endif

         for (i = 0; i < MAC_ADDR_LEN; i++)
                 mac_addr[i] = RTL_R8(tp, MAC0 + i);
@@ -10916,9 +10939,17 @@ rtl8125_get_mac_address(struct net_device *dev)
         rtl8125_rar_set(tp, mac_addr);

         for (i = 0; i < MAC_ADDR_LEN; i++) {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,17,0)
                 dev->dev_addr[i] = RTL_R8(tp, MAC0 + i);
                 tp->org_mac_addr[i] = dev->dev_addr[i]; /* keep the original MAC address */
+#else
+                addr[i] = RTL_R8(tp, MAC0 + i);
+                tp->org_mac_addr[i] = addr[i]; /* keep the original MAC address */
+#endif
         }
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,17,0)
+        eth_hw_addr_set(dev, addr);
+#endif
 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)
         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
 #endif
@@ -10944,7 +10975,11 @@ rtl8125_set_mac_address(struct net_device *dev,
         if (!is_valid_ether_addr(addr->sa_data))
                 return -EADDRNOTAVAIL;

+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,17,0)
         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+#else
+        eth_hw_addr_set(dev, addr->sa_data);
+#endif

         rtl8125_rar_set(tp, dev->dev_addr);

@@ -10959,7 +10994,7 @@ rtl8125_set_mac_address(struct net_device *dev,
  *****************************************************************************/
 void
 rtl8125_rar_set(struct rtl8125_private *tp,
-                uint8_t *addr)
+                const uint8_t *addr)
 {
         uint32_t rar_low = 0;
         uint32_t rar_high = 0;

https://github.com/Karlson2k/gentoo/blob/r8125-k5.17-fix/net-misc/r8125/files/r8125-9.008.00-linux-5.17.patch

I had the same issue as jiffy1111. For now, I just cloned the repository and installed the driver manually from commit "Update to 9.008.00." (6156e027c127) with:

# on machine with working network drivers: download driver needed for package, see URL in PKGBUILD
curl "http://rtitwww.realtek.com/rtdrivers/cn/nic1/r8125-9.008.00.tar.bz2" -LO
git clone https://aur.archlinux.org/r8125-dkms.git

# on machine missing r8125 driver
cd /path/to/repository/r8125-dkms
cp /path/to/downloaded/driver .
git checkout 6156e027c127af961c89bad600546d234d82ccab
makepkg -si

That's what worked for me till we get an update.

Hi, this update broke an lts kernel

==> dkms install --no-depmod r8125/9.008.00 -k 5.15.32-1-lts
Error! Bad return status for module build on kernel: 5.15.32-1-lts (x86_64)
Consult /var/lib/dkms/r8125/9.008.00/build/make.log for more information.
==> WARNING: `dkms install --no-depmod r8125/9.008.00 -k 5.15.32-1-lts' exited 10

~  cat /var/lib/dkms/r8125/9.008.00/build/make.log
DKMS make.log for r8125-9.008.00 for kernel 5.15.32-1-lts (x86_64)
Wed Apr  6 08:44:27 AM EDT 2022
make: Entering directory '/usr/lib/modules/5.15.32-1-lts/build'
  CC [M]  /var/lib/dkms/r8125/9.008.00/build/r8125_n.o
  CC [M]  /var/lib/dkms/r8125/9.008.00/build/rtl_eeprom.o
  CC [M]  /var/lib/dkms/r8125/9.008.00/build/rtltool.o
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c: In function ‘rtl8125_proc_open’:
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c:1753:50: error: implicit declaration of function ‘pde_data’ [-Werror=implicit-function-declaration]
 1753 |         int (*show)(struct seq_file *, void *) = pde_data(inode);
      |                                                  ^~~~~~~~
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c:1753:50: warning: initialization of ‘int (*)(struct seq_file *, void *)’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c: At top level:
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c:5243:42: warning: ‘struct kernel_ethtool_ringparam’ declared inside parameter list will not be visible outside of this definition or declaration
 5243 |                                   struct kernel_ethtool_ringparam *kernel_ring,
      |                                          ^~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c:5261:42: warning: ‘struct kernel_ethtool_ringparam’ declared inside parameter list will not be visible outside of this definition or declaration
 5261 |                                   struct kernel_ethtool_ringparam *kernel_ring,
      |                                          ^~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c:5792:31: error: initialization of ‘void (*)(struct net_device *, struct ethtool_ringparam *)’ from incompatible pointer type ‘void (*)(struct net_device *, struct ethtool_ringparam *, struct kernel_ethtool_ringparam *, struct netlink_ext_ack *)’ [-Werror=incompatible-pointer-types]
 5792 |         .get_ringparam      = rtl8125_get_ringparam,
      |                               ^~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c:5792:31: note: (near initialization for ‘rtl8125_ethtool_ops.get_ringparam’)
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c:5793:31: error: initialization of ‘int (*)(struct net_device *, struct ethtool_ringparam *)’ from incompatible pointer type ‘int (*)(struct net_device *, struct ethtool_ringparam *, struct kernel_ethtool_ringparam *, struct netlink_ext_ack *)’ [-Werror=incompatible-pointer-types]
 5793 |         .set_ringparam      = rtl8125_set_ringparam,
      |                               ^~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/r8125/9.008.00/build/r8125_n.c:5793:31: note: (near initialization for ‘rtl8125_ethtool_ops.set_ringparam’)
cc1: some warnings being treated as errors
make[1]: *** [scripts/Makefile.build:277: /var/lib/dkms/r8125/9.008.00/build/r8125_n.o] Error 1
make: *** [Makefile:1868: /var/lib/dkms/r8125/9.008.00/build] Error 2
make: Leaving directory '/usr/lib/modules/5.15.32-1-lts/build'