[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/fs/afs/netdevices.c b/src/kernel/linux/v4.19/fs/afs/netdevices.c
new file mode 100644
index 0000000..2a009d1
--- /dev/null
+++ b/src/kernel/linux/v4.19/fs/afs/netdevices.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+/* AFS network device helpers
+ *
+ * Copyright (c) 2007 Patrick McHardy <kaber@trash.net>
+ */
+
+#include <linux/string.h>
+#include <linux/rtnetlink.h>
+#include <linux/inetdevice.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <net/net_namespace.h>
+#include "internal.h"
+
+/*
+ * get a list of this system's interface IPv4 addresses, netmasks and MTUs
+ * - maxbufs must be at least 1
+ * - returns the number of interface records in the buffer
+ */
+int afs_get_ipv4_interfaces(struct afs_net *net, struct afs_interface *bufs,
+ size_t maxbufs, bool wantloopback)
+{
+ struct net_device *dev;
+ struct in_device *idev;
+ int n = 0;
+
+ ASSERT(maxbufs > 0);
+
+ rtnl_lock();
+ for_each_netdev(net->net, dev) {
+ if (dev->type == ARPHRD_LOOPBACK && !wantloopback)
+ continue;
+ idev = __in_dev_get_rtnl(dev);
+ if (!idev)
+ continue;
+ for_primary_ifa(idev) {
+ bufs[n].address.s_addr = ifa->ifa_address;
+ bufs[n].netmask.s_addr = ifa->ifa_mask;
+ bufs[n].mtu = dev->mtu;
+ n++;
+ if (n >= maxbufs)
+ goto out;
+ } endfor_ifa(idev);
+ }
+out:
+ rtnl_unlock();
+ return n;
+}