#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;
}
static inline void ipv4_change_dsfield(struct iphdr *iph,__u8 mask,
__u8 value)
{
- __u32 check = ntohs(iph->check);
+ __u32 check = ntohs((__force __be16)iph->check);
__u8 dsfield;
dsfield = (iph->tos & mask) | value;
if ((check+1) >> 16) check = (check+1) & 0xffff;
check -= dsfield;
check += check >> 16; /* adjust carry */
- iph->check = htons(check);
+ iph->check = (__force __sum16)htons(check);
iph->tos = dsfield;
}
static inline void ipv6_change_dsfield(struct ipv6hdr *ipv6h,__u8 mask,
__u8 value)
{
- __u16 tmp;
+ __be16 *p = (__force __be16 *)ipv6h;
- tmp = ntohs(*(__be16 *) ipv6h);
- tmp = (tmp & ((mask << 4) | 0xf00f)) | (value << 4);
- *(__be16 *) ipv6h = htons(tmp);
+ *p = (*p & htons((((u16)mask << 4) | 0xf00f))) | htons((u16)value << 4);
}