From 878532a30de6d3a958a69ea7397a06d84933c8a1 Mon Sep 17 00:00:00 2001
From: jifl <jifl>
Date: Wed, 28 Jan 2009 23:58:15 +0000
Subject: [PATCH]   * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h:
 inet_chksum_pseudo_partial()   is only used by UDPLITE at present, so
 conditionalise it.

---
 CHANGELOG                           | 4 ++++
 src/core/ipv4/inet_chksum.c         | 3 +++
 src/include/ipv4/lwip/inet_chksum.h | 2 ++
 3 files changed, 9 insertions(+)

diff --git a/CHANGELOG b/CHANGELOG
index 61946841..4f2804fc 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -19,6 +19,10 @@ HISTORY
 
   ++ New features:
 
+  2009-01-28 Jonathan Larmour (suggested by Bill Bauerbach)
+  * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h: inet_chksum_pseudo_partial()
+  is only used by UDPLITE at present, so conditionalise it.
+
   2008-12-03 Simon Goldschmidt (base on patch from Luca Ceresoli)
   * autoip.c: checked in (slightly modified) patch #6683: Customizable AUTOIP
     "seed" address. This should reduce AUTOIP conflicts if
diff --git a/src/core/ipv4/inet_chksum.c b/src/core/ipv4/inet_chksum.c
index de7b49d1..439c9760 100644
--- a/src/core/ipv4/inet_chksum.c
+++ b/src/core/ipv4/inet_chksum.c
@@ -327,6 +327,8 @@ inet_chksum_pseudo(struct pbuf *p,
  * @param proto_len length of the ip data part (used for checksum of pseudo header)
  * @return checksum (as u16_t) to be saved directly in the protocol header
  */
+/* Currently only used by UDPLITE, although this could change in the future. */
+#if LWIP_UDPLITE
 u16_t
 inet_chksum_pseudo_partial(struct pbuf *p,
        struct ip_addr *src, struct ip_addr *dest,
@@ -377,6 +379,7 @@ inet_chksum_pseudo_partial(struct pbuf *p,
   LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): pbuf chain lwip_chksum()=%"X32_F"\n", acc));
   return (u16_t)~(acc & 0xffffUL);
 }
+#endif /* LWIP_UDPLITE */
 
 /* inet_chksum:
  *
diff --git a/src/include/ipv4/lwip/inet_chksum.h b/src/include/ipv4/lwip/inet_chksum.h
index d7c74926..5cae59cb 100644
--- a/src/include/ipv4/lwip/inet_chksum.h
+++ b/src/include/ipv4/lwip/inet_chksum.h
@@ -46,9 +46,11 @@ u16_t inet_chksum_pbuf(struct pbuf *p);
 u16_t inet_chksum_pseudo(struct pbuf *p,
        struct ip_addr *src, struct ip_addr *dest,
        u8_t proto, u16_t proto_len);
+#if LWIP_UDPLITE
 u16_t inet_chksum_pseudo_partial(struct pbuf *p,
        struct ip_addr *src, struct ip_addr *dest,
        u8_t proto, u16_t proto_len, u16_t chksum_len);
+#endif
 
 #ifdef __cplusplus
 }