netlink: Make ip_csum and ip_fast_csum const-correct

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/netlink.c b/netlink.c
index d420f7bbecaa8c64a70fb53b93c4bcd5cccab4ab..0dd44502005eca1d9b38ccb563a237467f55a0d7 100644 (file)
--- a/netlink.c
+++ b/netlink.c
@@ -120,7 +120,7 @@ their use.
 #define ICMP_CODE_TTL_EXCEEDED           0
 
 /* Generic IP checksum routine */
-static inline uint16_t ip_csum(uint8_t *iph,int32_t count)
+static inline uint16_t ip_csum(const uint8_t *iph,int32_t count)
 {
     register uint32_t sum=0;
 
@@ -144,7 +144,7 @@ static inline uint16_t ip_csum(uint8_t *iph,int32_t count)
  *      By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
  *      Arnt Gulbrandsen.
  */
-static inline uint16_t ip_fast_csum(uint8_t *iph, int32_t ihl) {
+static inline uint16_t ip_fast_csum(const uint8_t *iph, int32_t ihl) {
     uint32_t sum;
 
     __asm__ __volatile__(