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siflower: wireguard support hotplug

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gl-dengxinfa 2022-12-27 15:02:50 +08:00
parent 429e40d176
commit e66fc1d1be
1 changed files with 271 additions and 0 deletions
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271
patches-siflower-18.x/4021-wireguard-support-hotplug-for-gl.patch Normal file
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@ -0,0 +1,271 @@
From 7d5abeaf71a3fc5df5208c0c7cc1d4aad6fc9213 Mon Sep 17 00:00:00 2001
From: gl-dengxinfa <xinfa.deng@gl-inet.com>
Date: Tue, 27 Dec 2022 15:01:02 +0800
Subject: [PATCH] wireguard support hotplug for gl
---
...001-wireguard-support-hotplug-for-gl.patch | 252 ++++++++++++++++++
1 file changed, 252 insertions(+)
create mode 100644 openwrt-18.06/package/network/services/wireguard/patches/0001-wireguard-support-hotplug-for-gl.patch
diff --git a/openwrt-18.06/package/network/services/wireguard/patches/0001-wireguard-support-hotplug-for-gl.patch b/openwrt-18.06/package/network/services/wireguard/patches/0001-wireguard-support-hotplug-for-gl.patch
new file mode 100644
index 000000000..984627342
--- /dev/null
+++ b/openwrt-18.06/package/network/services/wireguard/patches/0001-wireguard-support-hotplug-for-gl.patch
@@ -0,0 +1,252 @@
+Index: WireGuard-0.0.20181218/src/Kbuild
+===================================================================
+--- WireGuard-0.0.20181218.orig/src/Kbuild
++++ WireGuard-0.0.20181218/src/Kbuild
+@@ -6,7 +6,7 @@ ccflags-y := -O3 -fvisibility=hidden
+ ccflags-$(CONFIG_WIREGUARD_DEBUG) += -DDEBUG -g
+ ccflags-y += -D'pr_fmt(fmt)=KBUILD_MODNAME ": " fmt'
+
+-wireguard-y := main.o noise.o device.o peer.o timers.o queueing.o send.o receive.o socket.o hashtables.o allowedips.o ratelimiter.o cookie.o netlink.o
++wireguard-y := main.o noise.o device.o peer.o timers.o queueing.o send.o receive.o socket.o hashtables.o allowedips.o ratelimiter.o cookie.o netlink.o hotplug.o
+
+ include $(src)/crypto/Kbuild.include
+ include $(src)/compat/Kbuild.include
+Index: WireGuard-0.0.20181218/src/hotplug.c
+===================================================================
+--- /dev/null
++++ WireGuard-0.0.20181218/src/hotplug.c
+@@ -0,0 +1,124 @@
++/*
++ * oui-tertf Hotplug driver
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/version.h>
++#include <linux/kmod.h>
++#include <linux/input.h>
++
++#include <linux/workqueue.h>
++#include <linux/skbuff.h>
++#include <linux/netlink.h>
++#include <linux/kobject.h>
++
++#include <linux/workqueue.h>
++
++#define SUBSYSTEM_NAME "wireguard"
++
++
++#define BH_SKB_SIZE 2048
++#define IFNAMSIZ 16
++
++struct work_struct wg_event_work;
++struct wg_event {
++ struct work_struct work;
++ char ifname[IFNAMSIZ];
++ const char *action;
++};
++struct wg_event *gl_wg_event;
++
++static DEFINE_SPINLOCK(event_lock);
++
++
++/* -------------------------------------------------------------------------*/
++static int bh_event_add_var(struct sk_buff *skb, int argv,
++ const char *format, ...)
++{
++ static char buf[128];
++ char *s;
++ va_list args;
++ int len;
++
++ if (argv)
++ return 0;
++
++ va_start(args, format);
++ len = vsnprintf(buf, sizeof(buf), format, args);
++ va_end(args);
++
++ if (len >= sizeof(buf)) {
++ //WARN(1, "buffer size too small\n");
++ return -ENOMEM;
++ }
++
++ s = skb_put(skb, len + 1);
++ strcpy(s, buf);
++
++ return 0;
++}
++
++
++static void wireguard_send_hotplug(struct work_struct *mywork)
++{
++ struct wg_event * event;
++ struct sk_buff *skb;
++ char ifname[IFNAMSIZ];
++ char *action;
++
++ event = container_of(mywork, struct wg_event, work);
++ if (!event)
++ return;
++ skb = alloc_skb(BH_SKB_SIZE, GFP_KERNEL);
++ if (!skb)
++ return;
++ strcpy(ifname, event->ifname);
++ action = event->action;
++
++ pr_info("wireguard-hotplug IFNAME=%s ACTION=%s\n", ifname, action);
++
++ bh_event_add_var(skb, 0, "SUBSYSTEM=%s", SUBSYSTEM_NAME);
++
++ spin_lock(&event_lock);
++ bh_event_add_var(skb, 0, "ACTION=%s", action);
++ bh_event_add_var(skb, 0, "ifname=%s", ifname);
++ spin_unlock(&event_lock);
++
++ NETLINK_CB(skb).dst_group = 1;
++ broadcast_uevent(skb, 0, 1, GFP_KERNEL);
++}
++
++void wireguard_hotplug(const char *ifname, const char *action)
++{
++ if(gl_wg_event == NULL){
++ return;
++ }
++ if (0 == strcmp(ifname,"wgserver"))
++ return;
++
++ spin_lock(&event_lock);
++ memcpy(gl_wg_event->ifname, ifname, IFNAMSIZ);
++ gl_wg_event->action = action;
++ spin_unlock(&event_lock);
++
++ schedule_work(&gl_wg_event->work);
++}
++
++void wg_hotplug_init(void)
++{
++ gl_wg_event = (struct wg_event *)kzalloc(sizeof(struct wg_event),GFP_KERNEL);
++ if(gl_wg_event == NULL){
++ return;
++ }
++ gl_wg_event->work = wg_event_work;
++ INIT_WORK(&gl_wg_event->work, wireguard_send_hotplug);
++}
++
++void wg_hotplug_free(void)
++{
++ if(gl_wg_event){
++ kfree(gl_wg_event);
++ }
++ return;
++}
+Index: WireGuard-0.0.20181218/src/hotplug.h
+===================================================================
+--- /dev/null
++++ WireGuard-0.0.20181218/src/hotplug.h
+@@ -0,0 +1,13 @@
++#ifndef __HOTPLUG_H__
++#define __HOTPLUG_H__
++
++#define REKEY_GIVEUP_EVENT "REKEY-GIVEUP"
++#define REKEY_TIMEOUT_EVENT "REKEY-TIMEOUT"
++#define KEYPAIR_CREATED_EVENT "KEYPAIR-CREATED"
++
++extern void wireguard_hotplug(const char *ifname, const char *action);
++extern void wg_hotplug_init(void);
++extern void wg_hotplug_free(void);
++
++#endif
++
+Index: WireGuard-0.0.20181218/src/main.c
+===================================================================
+--- WireGuard-0.0.20181218.orig/src/main.c
++++ WireGuard-0.0.20181218/src/main.c
+@@ -1,3 +1,4 @@
++
+ // SPDX-License-Identifier: GPL-2.0
+ /*
+ * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+@@ -18,6 +19,8 @@
+ #include <linux/genetlink.h>
+ #include <net/rtnetlink.h>
+
++#include "hotplug.h"
++
+ static int __init mod_init(void)
+ {
+ int ret;
+@@ -41,6 +44,7 @@ static int __init mod_init(void)
+ ret = wg_genetlink_init();
+ if (ret < 0)
+ goto err_netlink;
++ wg_hotplug_init();
+
+ pr_info("WireGuard " WIREGUARD_VERSION " loaded. See www.wireguard.com for information.\n");
+ pr_info("Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.\n");
+@@ -55,6 +59,7 @@ err_device:
+
+ static void __exit mod_exit(void)
+ {
++ wg_hotplug_free();
+ wg_genetlink_uninit();
+ wg_device_uninit();
+ }
+Index: WireGuard-0.0.20181218/src/noise.c
+===================================================================
+--- WireGuard-0.0.20181218.orig/src/noise.c
++++ WireGuard-0.0.20181218/src/noise.c
+@@ -1,3 +1,4 @@
++
+ // SPDX-License-Identifier: GPL-2.0
+ /*
+ * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+@@ -9,6 +10,7 @@
+ #include "messages.h"
+ #include "queueing.h"
+ #include "hashtables.h"
++#include "hotplug.h"
+
+ #include <linux/rcupdate.h>
+ #include <linux/slab.h>
+@@ -786,6 +788,7 @@ bool wg_noise_handshake_begin_session(st
+ ret = wg_index_hashtable_replace(
+ &handshake->entry.peer->device->index_hashtable,
+ &handshake->entry, &new_keypair->entry);
++ wireguard_hotplug(handshake->entry.peer->device->dev->name, KEYPAIR_CREATED_EVENT);
+ } else {
+ kzfree(new_keypair);
+ }
+Index: WireGuard-0.0.20181218/src/timers.c
+===================================================================
+--- WireGuard-0.0.20181218.orig/src/timers.c
++++ WireGuard-0.0.20181218/src/timers.c
+@@ -1,3 +1,4 @@
++
+ // SPDX-License-Identifier: GPL-2.0
+ /*
+ * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+@@ -8,6 +9,7 @@
+ #include "peer.h"
+ #include "queueing.h"
+ #include "socket.h"
++#include "hotplug.h"
+
+ /*
+ * - Timer for retransmitting the handshake if we don't hear back after
+@@ -59,6 +61,7 @@ static void wg_expired_retransmit_handsh
+ if (!timer_pending(&peer->timer_zero_key_material))
+ mod_peer_timer(peer, &peer->timer_zero_key_material,
+ jiffies + REJECT_AFTER_TIME * 3 * HZ);
++ wireguard_hotplug(peer->device->dev->name, REKEY_GIVEUP_EVENT);
+ } else {
+ ++peer->timer_handshake_attempts;
+ pr_debug("%s: Handshake for peer %llu (%pISpfsc) did not complete after %d seconds, retrying (try %d)\n",
+@@ -72,6 +75,7 @@ static void wg_expired_retransmit_handsh
+ wg_socket_clear_peer_endpoint_src(peer);
+
+ wg_packet_send_queued_handshake_initiation(peer, true);
++ wireguard_hotplug(peer->device->dev->name, REKEY_TIMEOUT_EVENT);
+ }
+ }
+
--
2.34.1