14 static inline int INET_ECN_is_ce(__u8 dsfield)
16 return (dsfield & INET_ECN_MASK) == INET_ECN_CE;
19 static inline int INET_ECN_is_not_ce(__u8 dsfield)
21 return (dsfield & INET_ECN_MASK) == INET_ECN_ECT_0;
24 static inline int INET_ECN_is_capable(__u8 dsfield)
26 return (dsfield & INET_ECN_ECT_0);
29 static inline __u8 INET_ECN_encapsulate(__u8 outer, __u8 inner)
31 outer &= ~INET_ECN_MASK;
32 if (INET_ECN_is_capable(inner))
33 outer |= (inner & INET_ECN_MASK);
37 #define INET_ECN_xmit(sk) do { inet_sk(sk)->tos |= INET_ECN_ECT_0; } while (0)
38 #define INET_ECN_dontxmit(sk) \
39 do { inet_sk(sk)->tos &= ~INET_ECN_MASK; } while (0)
41 #define IP6_ECN_flow_init(label) do { \
42 (label) &= ~htonl(INET_ECN_MASK << 20); \
45 #define IP6_ECN_flow_xmit(sk, label) do { \
46 if (INET_ECN_is_capable(inet_sk(sk)->tos)) \
47 (label) |= __constant_htons(INET_ECN_ECT_0 << 4); \
50 static inline void IP_ECN_set_ce(struct iphdr *iph)
52 u32 check = iph->check;
53 check += __constant_htons(0xFFFE);
54 iph->check = check + (check>=0xFFFF);
55 iph->tos |= INET_ECN_CE;
58 static inline void IP_ECN_clear(struct iphdr *iph)
60 iph->tos &= ~INET_ECN_MASK;
65 static inline void IP6_ECN_set_ce(struct ipv6hdr *iph)
67 *(u32*)iph |= htonl(INET_ECN_CE << 20);
70 static inline void IP6_ECN_clear(struct ipv6hdr *iph)
72 *(u32*)iph &= ~htonl(INET_ECN_MASK << 20);
75 #define ip6_get_dsfield(iph) ((ntohs(*(u16*)(iph)) >> 4) & 0xFF)