From 65828d336782dd2a70fd8d215d58137d2ec1d0d0 Mon Sep 17 00:00:00 2001
From: spumer <spumer-tm@yandex.ru>
Date: Mon, 16 Mar 2020 18:20:14 +0500
Subject: [PATCH] fix(filter): fix outgoing packet udp csum

---
 src-ebpf/redirect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src-ebpf/redirect.c b/src-ebpf/redirect.c
index 93831d0..3a9bd86 100644
--- a/src-ebpf/redirect.c
+++ b/src-ebpf/redirect.c
@@ -94,7 +94,7 @@ int outgoing(struct __sk_buff *skb) {
     if (value != 0) {
         u16 gameserver_port = *value;
 
-        incr_cksum_l4(&udp->crc, udp->sport, gameserver_port, 1);
+        incr_cksum_l4(&udp->crc, udp->sport, gameserver_port, 2);
         udp->sport = gameserver_port;
     }