From 83e801f36c937713d1c2d975fb00b21ec66f965e Mon Sep 17 00:00:00 2001
From: gamemann <gamemann@gflclan.com>
Date: Fri, 12 Nov 2021 21:07:12 +0000
Subject: [PATCH] Check for IPv6 header validity itself and remove unneeded
 check.

---
 src/xdpfw_kern.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/src/xdpfw_kern.c b/src/xdpfw_kern.c
index 07389c2..c64a9fe 100644
--- a/src/xdpfw_kern.c
+++ b/src/xdpfw_kern.c
@@ -353,13 +353,8 @@ int xdp_prog_main(struct xdp_md *ctx)
         }
 
         // Do specific IPv6.
-        if (eth->h_proto == htons(ETH_P_IPV6))
+        if (iph6)
         {
-            if (iph6 + 1 > (struct ipv6hdr *)data_end)
-            {
-                break;
-            }
-
             // Source address.
             if (filter->srcip6[0] != 0 && (iph6->saddr.in6_u.u6_addr32[0] != filter->srcip6[0] || iph6->saddr.in6_u.u6_addr32[1] != filter->srcip6[1] || iph6->saddr.in6_u.u6_addr32[2] != filter->srcip6[2] || iph6->saddr.in6_u.u6_addr32[3] != filter->srcip6[3]))
             {