#define _INET_ECN_H_
#include <linux/ip.h>
+#include <linux/skbuff.h>
+
+#include <net/inet_sock.h>
#include <net/dsfield.h>
enum {
#define IP6_ECN_flow_xmit(sk, label) do { \
if (INET_ECN_is_capable(inet_sk(sk)->tos)) \
- (label) |= __constant_htons(INET_ECN_ECT_0 << 4); \
+ (label) |= htonl(INET_ECN_ECT_0 << 20); \
} while (0)
-static inline void 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;
/*
* INET_ECN_CE => 00
*/
if (!(ecn & 2))
- return;
+ return !ecn;
/*
* The following gives us:
* INET_ECN_ECT_1 => check += htons(0xFFFD)
* 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;
+ return 1;
}
static inline void IP_ECN_clear(struct iphdr *iph)
struct ipv6hdr;
-static inline void IP6_ECN_set_ce(struct ipv6hdr *iph)
+static inline int IP6_ECN_set_ce(struct ipv6hdr *iph)
{
if (INET_ECN_is_not_ect(ipv6_get_dsfield(iph)))
- return;
- *(u32*)iph |= htonl(INET_ECN_CE << 20);
+ return 0;
+ *(__be32*)iph |= htonl(INET_ECN_CE << 20);
+ return 1;
}
static inline void IP6_ECN_clear(struct ipv6hdr *iph)
{
- *(u32*)iph &= ~htonl(INET_ECN_MASK << 20);
+ *(__be32*)iph &= ~htonl(INET_ECN_MASK << 20);
}
static inline void ipv6_copy_dscp(struct ipv6hdr *outer, struct ipv6hdr *inner)
ipv6_change_dsfield(inner, INET_ECN_MASK, dscp);
}
+static inline int INET_ECN_set_ce(struct sk_buff *skb)
+{
+ switch (skb->protocol) {
+ case __constant_htons(ETH_P_IP):
+ if (skb->nh.raw + sizeof(struct iphdr) <= skb->tail)
+ return IP_ECN_set_ce(skb->nh.iph);
+ break;
+
+ case __constant_htons(ETH_P_IPV6):
+ if (skb->nh.raw + sizeof(struct ipv6hdr) <= skb->tail)
+ return IP6_ECN_set_ce(skb->nh.ipv6h);
+ break;
+ }
+
+ return 0;
+}
+
#endif