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[NET]: IP header modifier helpers annotations.

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Al Viro 2006-11-14 21:42:26 -08:00 • committed by David S. Miller
parent f6ab028804
commit 5c78f275e6
3 changed files with 8 additions and 8 deletions
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4
include/net/dsfield.h
View file

@ -27,7 +27,7 @@ static inline __u8 ipv6_get_dsfield(struct ipv6hdr *ipv6h)
static inline void ipv4_change_dsfield(struct iphdr *iph,__u8 mask, static inline void ipv4_change_dsfield(struct iphdr *iph,__u8 mask,
__u8 value) __u8 value)
{ {
__u32 check = ntohs(iph->check); __u32 check = ntohs((__force __be16)iph->check);
__u8 dsfield; __u8 dsfield;
dsfield = (iph->tos & mask) | value; 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; if ((check+1) >> 16) check = (check+1) & 0xffff;
check -= dsfield; check -= dsfield;
check += check >> 16; /* adjust carry */ check += check >> 16; /* adjust carry */
iph->check = htons(check); iph->check = (__force __sum16)htons(check);
iph->tos = dsfield; iph->tos = dsfield;
} }

6
include/net/inet_ecn.h
View file

@ -53,7 +53,7 @@ static inline __u8 INET_ECN_encapsulate(__u8 outer, __u8 inner)
static inline int IP_ECN_set_ce(struct iphdr *iph) static inline int IP_ECN_set_ce(struct iphdr *iph)
{ {
u32 check = iph->check; u32 check = (__force u32)iph->check;
u32 ecn = (iph->tos + 1) & INET_ECN_MASK; u32 ecn = (iph->tos + 1) & INET_ECN_MASK;
/* /*
@ -71,9 +71,9 @@ static inline int IP_ECN_set_ce(struct iphdr *iph)
* INET_ECN_ECT_1 => check += htons(0xFFFD) * INET_ECN_ECT_1 => check += htons(0xFFFD)
* INET_ECN_ECT_0 => check += htons(0xFFFE) * INET_ECN_ECT_0 => check += htons(0xFFFE)
*/ */
check += htons(0xFFFB) + htons(ecn); check += (__force u16)htons(0xFFFB) + (__force u16)htons(ecn);
iph->check = check + (check>=0xFFFF); iph->check = (__force __sum16)(check + (check>=0xFFFF));
iph->tos |= INET_ECN_CE; iph->tos |= INET_ECN_CE;
return 1; return 1;
} }

6
include/net/ip.h
View file

@ -192,9 +192,9 @@ extern void ipfrag_init(void);
static inline static inline
int ip_decrease_ttl(struct iphdr *iph) int ip_decrease_ttl(struct iphdr *iph)
{ {
u32 check = iph->check; u32 check = (__force u32)iph->check;
check += htons(0x0100); check += (__force u32)htons(0x0100);
iph->check = check + (check>=0xFFFF); iph->check = (__force __sum16)(check + (check>=0xFFFF));
return --iph->ttl; return --iph->ttl;
} }