diff options
Diffstat (limited to 'include/net/dsfield.h')
| -rw-r--r-- | include/net/dsfield.h | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/include/net/dsfield.h b/include/net/dsfield.h index a79c9e075f7..e1ad903a8d6 100644 --- a/include/net/dsfield.h +++ b/include/net/dsfield.h @@ -12,22 +12,22 @@ #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(*(__u16 *) 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; @@ -35,7 +35,7 @@ static inline void ipv4_change_dsfield(struct iphdr *iph,__u8 mask, 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; } @@ -43,11 +43,9 @@ static inline void ipv4_change_dsfield(struct iphdr *iph,__u8 mask, static inline void ipv6_change_dsfield(struct ipv6hdr *ipv6h,__u8 mask, __u8 value) { - __u16 tmp; + __be16 *p = (__force __be16 *)ipv6h; - tmp = ntohs(*(__u16 *) ipv6h); - tmp = (tmp & ((mask << 4) | 0xf00f)) | (value << 4); - *(__u16 *) ipv6h = htons(tmp); + *p = (*p & htons((((u16)mask << 4) | 0xf00f))) | htons((u16)value << 4); } |