1 files changed, 31 insertions, 2 deletions

diff --git a/TODO b/TODO
index 796c918..2cf35cf 100644
--- a/TODO
+++ b/TODO
@@ -5,5 +5,34 @@ gateway
 
 Check compat with tcpdump. Linux2.4 needs to copy skb() for that, but it oopses
 
-Update csum, see http://www.firstpr.com.au/ip/ivip/checksums/ and
-http://www.faqs.org/rfcs/rfc1624.html
\ No newline at end of file
+Update csum, see http://www.faqs.org/rfcs/rfc1624.html for these
+protos (see http://www.firstpr.com.au/ip/ivip/checksums/ ):
+
+IPPROTO_TCP, IPPROTO_UDP, IPPROTO_DCCP, IPPROTO_AH?, IPPROTO_ICMPV6, IPPROTO_UDPLITE
+break NEXTHDR_NONE
+
+Evnt mit ipv6_gso_pull_exthdrs() oder ipv6_skip_exthdr() oder ipv6_find_hdr() oder nf_ct_ipv6_skip_exthdr()
+
+unsigned int ptr = skb_network_offset(skb) + sizeof(struct ipv6hdr);
+u_int8_t c = ipv6hdr.nexthdr;
+while (c != NEXTHDR_NONE && ip6t_ext_hdr(currenthdr)) {
+  const struct ipv6_opt_hdr *hp = skb_header_pointer(skb, ptr, sizeof(_hdr), &_hdr);
+  switch(c) {
+    case IPPROTO_FRAGMENT:
+      hdrlen = 8;
+      break;
+    case IPPROTO_DSTOPTS:
+    case IPPROTO_ROUTING:
+    case IPPROTO_HOPOPTS:
+      hdrlen = ipv6_optlen(hp);
+      break;
+    case IPPROTO_AH:
+      hdrlen = (hp->hdrlen+2)<<2;
+      break;
+    default:
+      return;
+  }
+  c = hp->nexthdr;
+  ptr += hdrlen;
+}
+