From 5658b2563f0a939e424cd7ef34643cf5141a6bf1 Mon Sep 17 00:00:00 2001
From: Lorenzo Colitti <lorenzo@google.com>
Date: Sat, 8 Mar 2014 20:29:52 +0000
Subject: Revert "DO NOT MERGE: Add generic IP packet code and use it for GRE."

This reverts commit f10644ce653e130280e93da8a1096454a4d8d61a.

Change-Id: Id70d629038e5269c64580b9a89f35179bc7c6926
---
 ipv4.c      |  8 +++-----
 ipv6.c      |  8 +++-----
 translate.c | 16 ----------------
 translate.h |  3 ---
 4 files changed, 6 insertions(+), 29 deletions(-)

diff --git a/ipv4.c b/ipv4.c
index b5cbf80..47f2422 100644
--- a/ipv4.c
+++ b/ipv4.c
@@ -123,14 +123,12 @@ int ipv4_packet(clat_packet out, int pos, const char *packet, size_t len) {
   // Calculate the pseudo-header checksum.
   checksum = ipv6_pseudo_header_checksum(0, ip6_targ, len_left);
 
-  if (nxthdr == IPPROTO_ICMPV6) {
+  if(nxthdr == IPPROTO_ICMPV6) {
     iov_len = icmp_packet(out, pos + 1, (const struct icmphdr *) next_header, checksum, len_left);
-  } else if (nxthdr == IPPROTO_TCP) {
+  } else if(nxthdr == IPPROTO_TCP) {
     iov_len = tcp_packet(out, pos + 1, (const struct tcphdr *) next_header, checksum, len_left);
-  } else if (nxthdr == IPPROTO_UDP) {
+  } else if(nxthdr == IPPROTO_UDP) {
     iov_len = udp_packet(out, pos + 1, (const struct udphdr *) next_header, checksum, len_left);
-  } else if (nxthdr == IPPROTO_GRE) {
-    iov_len = generic_packet(out, pos + 1, next_header, len_left);
   } else {
 #if CLAT_DEBUG
     logmsg_dbg(ANDROID_LOG_ERROR, "ip_packet/unknown protocol: %x",header->protocol);
diff --git a/ipv6.c b/ipv6.c
index 79303ec..4dff3bc 100644
--- a/ipv6.c
+++ b/ipv6.c
@@ -136,16 +136,14 @@ int ipv6_packet(clat_packet out, int pos, const char *packet, size_t len) {
   checksum = ipv4_pseudo_header_checksum(0, ip_targ, len_left);
 
   // does not support IPv6 extension headers, this will drop any packet with them
-  if (protocol == IPPROTO_ICMP) {
+  if(protocol == IPPROTO_ICMP) {
     iov_len = icmp6_packet(out, pos + 1, (const struct icmp6_hdr *) next_header, len_left);
-  } else if (ip6->ip6_nxt == IPPROTO_TCP) {
+  } else if(ip6->ip6_nxt == IPPROTO_TCP) {
     iov_len = tcp_packet(out, pos + 1, (const struct tcphdr *) next_header, checksum,
                          len_left);
-  } else if (ip6->ip6_nxt == IPPROTO_UDP) {
+  } else if(ip6->ip6_nxt == IPPROTO_UDP) {
     iov_len = udp_packet(out, pos + 1, (const struct udphdr *) next_header, checksum,
                          len_left);
-  } else if (ip6->ip6_nxt == IPPROTO_GRE) {
-    iov_len = generic_packet(out, pos + 1, next_header, len_left);
   } else {
 #if CLAT_DEBUG
     logmsg(ANDROID_LOG_ERROR, "ipv6_packet/unknown next header type: %x", ip6->ip6_nxt);
diff --git a/translate.c b/translate.c
index 00ea0b9..599182d 100644
--- a/translate.c
+++ b/translate.c
@@ -278,22 +278,6 @@ int icmp6_to_icmp(clat_packet out, int pos, const struct icmp6_hdr *icmp6,
   return clat_packet_len;
 }
 
-/* function: generic_packet
- * takes a generic IP packet and sets it up for translation
- * out      - output packet
- * pos      - position in the output packet of the transport header
- * payload  - pointer to IP payload
- * len      - size of ip payload
- * returns: the highest position in the output clat_packet that's filled in
- */
-int generic_packet(clat_packet out, int pos, const char *payload, size_t len) {
-  out[pos].iov_len = 0;
-  out[CLAT_POS_PAYLOAD].iov_base = (char *) payload;
-  out[CLAT_POS_PAYLOAD].iov_len = len;
-
-  return CLAT_POS_PAYLOAD + 1;
-}
-
 /* function: udp_packet
  * takes a udp packet and sets it up for translation
  * out      - output packet
diff --git a/translate.h b/translate.h
index 9f1ac15..c4d8ede 100644
--- a/translate.h
+++ b/translate.h
@@ -57,9 +57,6 @@ int icmp_to_icmp6(clat_packet out, int pos, const struct icmphdr *icmp, uint32_t
 int icmp6_to_icmp(clat_packet out, int pos, const struct icmp6_hdr *icmp6,
                   const char *payload, size_t payload_size);
 
-// Translate generic IP packets.
-int generic_packet(clat_packet out, int pos, const char *payload, size_t len);
-
 // Translate TCP and UDP packets.
 int tcp_packet(clat_packet out, int pos, const struct tcphdr *tcp, uint32_t checksum, size_t len);
 int udp_packet(clat_packet out, int pos, const struct udphdr *udp, uint32_t checksum, size_t len);
-- 
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