struct nf_afinfo {
unsigned short family;
- __sum16 (*checksum_partial)(struct sk_buff *skb,
- unsigned int hook,
- unsigned int dataoff,
- unsigned int len,
- u_int8_t protocol);
int (*route)(struct net *net, struct dst_entry **dst,
struct flowi *fl, bool strict);
void (*saveroute)(const struct sk_buff *skb,
unsigned int dataoff, u_int8_t protocol,
unsigned short family);
-static inline __sum16
-nf_checksum_partial(struct sk_buff *skb, unsigned int hook,
- unsigned int dataoff, unsigned int len,
- u_int8_t protocol, unsigned short family)
-{
- const struct nf_afinfo *afinfo;
- __sum16 csum = 0;
-
- rcu_read_lock();
- afinfo = nf_get_afinfo(family);
- if (afinfo)
- csum = afinfo->checksum_partial(skb, hook, dataoff, len,
- protocol);
- rcu_read_unlock();
- return csum;
-}
+__sum16 nf_checksum_partial(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, unsigned int len,
+ u_int8_t protocol, unsigned short family);
int nf_register_afinfo(const struct nf_afinfo *afinfo);
void nf_unregister_afinfo(const struct nf_afinfo *afinfo);
#ifdef CONFIG_INET
__sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, u_int8_t protocol);
+__sum16 nf_ip_checksum_partial(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, unsigned int len,
+ u_int8_t protocol);
#else
static inline __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, u_int8_t protocol)
{
return 0;
}
+static inline __sum16 nf_ip_checksum_partial(struct sk_buff *skb,
+ unsigned int hook,
+ unsigned int dataoff,
+ unsigned int len,
+ u_int8_t protocol)
+{
+ return 0;
+}
#endif /* CONFIG_INET */
#endif /*__LINUX_IP_NETFILTER_H*/
int (*output)(struct net *, struct sock *, struct sk_buff *));
__sum16 (*checksum)(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, u_int8_t protocol);
+ __sum16 (*checksum_partial)(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, unsigned int len,
+ u_int8_t protocol);
};
#ifdef CONFIG_NETFILTER
return 0;
}
-static __sum16 nf_br_checksum_partial(struct sk_buff *skb, unsigned int hook,
- unsigned int dataoff, unsigned int len,
- u_int8_t protocol)
-{
- return 0;
-}
-
static int nf_br_route(struct net *net, struct dst_entry **dst,
struct flowi *fl, bool strict __always_unused)
{
static const struct nf_afinfo nf_br_afinfo = {
.family = AF_BRIDGE,
- .checksum_partial = nf_br_checksum_partial,
.route = nf_br_route,
.saveroute = nf_br_saveroute,
.reroute = nf_br_reroute,
}
EXPORT_SYMBOL(nf_ip_checksum);
-static __sum16 nf_ip_checksum_partial(struct sk_buff *skb, unsigned int hook,
- unsigned int dataoff, unsigned int len,
- u_int8_t protocol)
+__sum16 nf_ip_checksum_partial(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, unsigned int len,
+ u_int8_t protocol)
{
const struct iphdr *iph = ip_hdr(skb);
__sum16 csum = 0;
}
return csum;
}
+EXPORT_SYMBOL_GPL(nf_ip_checksum_partial);
static int nf_ip_route(struct net *net, struct dst_entry **dst,
struct flowi *fl, bool strict __always_unused)
static const struct nf_afinfo nf_ip_afinfo = {
.family = AF_INET,
- .checksum_partial = nf_ip_checksum_partial,
.route = nf_ip_route,
.saveroute = nf_ip_saveroute,
.reroute = nf_ip_reroute,
};
static const struct nf_ipv6_ops ipv6ops = {
- .chk_addr = ipv6_chk_addr,
- .route_input = ip6_route_input,
- .fragment = ip6_fragment,
- .checksum = nf_ip6_checksum,
+ .chk_addr = ipv6_chk_addr,
+ .route_input = ip6_route_input,
+ .fragment = ip6_fragment,
+ .checksum = nf_ip6_checksum,
+ .checksum_partial = nf_ip6_checksum_partial,
};
static const struct nf_afinfo nf_ip6_afinfo = {
.family = AF_INET6,
- .checksum_partial = nf_ip6_checksum_partial,
.route = nf_ip6_route,
.saveroute = nf_ip6_saveroute,
.reroute = nf_ip6_reroute,
return csum;
}
EXPORT_SYMBOL_GPL(nf_checksum);
+
+__sum16 nf_checksum_partial(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, unsigned int len,
+ u_int8_t protocol, unsigned short family)
+{
+ const struct nf_ipv6_ops *v6ops;
+ __sum16 csum = 0;
+
+ switch (family) {
+ case AF_INET:
+ csum = nf_ip_checksum_partial(skb, hook, dataoff, len,
+ protocol);
+ break;
+ case AF_INET6:
+ v6ops = rcu_dereference(nf_ipv6_ops);
+ if (v6ops)
+ csum = v6ops->checksum_partial(skb, hook, dataoff, len,
+ protocol);
+ break;
+ }
+
+ return csum;
+}
+EXPORT_SYMBOL_GPL(nf_checksum_partial);