[NET]: Constify include/net/dsfield.h

Constify include/net/dsfield.h

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/dsfield.h b/include/net/dsfield.h
index eb65bf2e2502d972218c99bc95e8b65c8abc0856..8a8d4e06900d8824ba4a892c5f29f9c40525f0e0 100644 (file)
--- a/include/net/dsfield.h
+++ b/include/net/dsfield.h
@@ -12,15 +12,15 @@
 #include <asm/byteorder.h>
 
 
-static inline __u8 ipv4_get_dsfield(struct iphdr *iph)
+static inline __u8 ipv4_get_dsfield(const struct iphdr *iph)
 {
        return iph->tos;
 }
 
 
-static inline __u8 ipv6_get_dsfield(struct ipv6hdr *ipv6h)
+static inline __u8 ipv6_get_dsfield(const struct ipv6hdr *ipv6h)
 {
-       return ntohs(*(__be16 *) ipv6h) >> 4;
+       return ntohs(*(const __be16 *)ipv6h) >> 4;
 }