* 2 of the License, or(at your option) any later version.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/in6.h>
#include <linux/ipv6.h>
#include <net/addrconf.h>
#include <net/inet_connection_sock.h>
+#include <net/inet_ecn.h>
+#include <net/inet_hashtables.h>
+#include <net/ip6_route.h>
#include <net/sock.h>
+#include <net/inet6_connection_sock.h>
+
+int inet6_csk_bind_conflict(const struct sock *sk,
+ const struct inet_bind_bucket *tb)
+{
+ const struct sock *sk2;
+ const struct hlist_node *node;
+
+ /* We must walk the whole port owner list in this case. -DaveM */
+ /*
+ * See comment in inet_csk_bind_conflict about sock lookup
+ * vs net namespaces issues.
+ */
+ sk_for_each_bound(sk2, node, &tb->owners) {
+ if (sk != sk2 &&
+ (!sk->sk_bound_dev_if ||
+ !sk2->sk_bound_dev_if ||
+ sk->sk_bound_dev_if == sk2->sk_bound_dev_if) &&
+ (!sk->sk_reuse || !sk2->sk_reuse ||
+ sk2->sk_state == TCP_LISTEN) &&
+ ipv6_rcv_saddr_equal(sk, sk2))
+ break;
+ }
+
+ return node != NULL;
+}
+
+EXPORT_SYMBOL_GPL(inet6_csk_bind_conflict);
/*
* request_sock (formerly open request) hash tables.
*/
-static u32 inet6_synq_hash(const struct in6_addr *raddr, const u16 rport,
+static u32 inet6_synq_hash(const struct in6_addr *raddr, const __be16 rport,
const u32 rnd, const u16 synq_hsize)
{
- u32 a = raddr->s6_addr32[0];
- u32 b = raddr->s6_addr32[1];
- u32 c = raddr->s6_addr32[2];
+ u32 a = (__force u32)raddr->s6_addr32[0];
+ u32 b = (__force u32)raddr->s6_addr32[1];
+ u32 c = (__force u32)raddr->s6_addr32[2];
a += JHASH_GOLDEN_RATIO;
b += JHASH_GOLDEN_RATIO;
c += rnd;
__jhash_mix(a, b, c);
- a += raddr->s6_addr32[3];
- b += (u32)rport;
+ a += (__force u32)raddr->s6_addr32[3];
+ b += (__force u32)rport;
__jhash_mix(a, b, c);
return c & (synq_hsize - 1);
struct request_sock *inet6_csk_search_req(const struct sock *sk,
struct request_sock ***prevp,
- const __u16 rport,
+ const __be16 rport,
const struct in6_addr *raddr,
const struct in6_addr *laddr,
const int iif)
}
EXPORT_SYMBOL_GPL(inet6_csk_reqsk_queue_hash_add);
+
+void inet6_csk_addr2sockaddr(struct sock *sk, struct sockaddr * uaddr)
+{
+ struct ipv6_pinfo *np = inet6_sk(sk);
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) uaddr;
+
+ sin6->sin6_family = AF_INET6;
+ ipv6_addr_copy(&sin6->sin6_addr, &np->daddr);
+ sin6->sin6_port = inet_sk(sk)->dport;
+ /* We do not store received flowlabel for TCP */
+ sin6->sin6_flowinfo = 0;
+ sin6->sin6_scope_id = 0;
+ if (sk->sk_bound_dev_if &&
+ ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
+ sin6->sin6_scope_id = sk->sk_bound_dev_if;
+}
+
+EXPORT_SYMBOL_GPL(inet6_csk_addr2sockaddr);
+
+static inline
+void __inet6_csk_dst_store(struct sock *sk, struct dst_entry *dst,
+ struct in6_addr *daddr, struct in6_addr *saddr)
+{
+ __ip6_dst_store(sk, dst, daddr, saddr);
+
+#ifdef CONFIG_XFRM
+ {
+ struct rt6_info *rt = (struct rt6_info *)dst;
+ rt->rt6i_flow_cache_genid = atomic_read(&flow_cache_genid);
+ }
+#endif
+}
+
+static inline
+struct dst_entry *__inet6_csk_dst_check(struct sock *sk, u32 cookie)
+{
+ struct dst_entry *dst;
+
+ dst = __sk_dst_check(sk, cookie);
+
+#ifdef CONFIG_XFRM
+ if (dst) {
+ struct rt6_info *rt = (struct rt6_info *)dst;
+ if (rt->rt6i_flow_cache_genid != atomic_read(&flow_cache_genid)) {
+ sk->sk_dst_cache = NULL;
+ dst_release(dst);
+ dst = NULL;
+ }
+ }
+#endif
+
+ return dst;
+}
+
+int inet6_csk_xmit(struct sk_buff *skb, int ipfragok)
+{
+ struct sock *sk = skb->sk;
+ struct inet_sock *inet = inet_sk(sk);
+ struct ipv6_pinfo *np = inet6_sk(sk);
+ struct flowi fl;
+ struct dst_entry *dst;
+ struct in6_addr *final_p = NULL, final;
+
+ memset(&fl, 0, sizeof(fl));
+ fl.proto = sk->sk_protocol;
+ ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
+ ipv6_addr_copy(&fl.fl6_src, &np->saddr);
+ fl.fl6_flowlabel = np->flow_label;
+ IP6_ECN_flow_xmit(sk, fl.fl6_flowlabel);
+ fl.oif = sk->sk_bound_dev_if;
+ fl.fl_ip_sport = inet->sport;
+ fl.fl_ip_dport = inet->dport;
+ security_sk_classify_flow(sk, &fl);
+
+ if (np->opt && np->opt->srcrt) {
+ struct rt0_hdr *rt0 = (struct rt0_hdr *)np->opt->srcrt;
+ ipv6_addr_copy(&final, &fl.fl6_dst);
+ ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
+ final_p = &final;
+ }
+
+ dst = __inet6_csk_dst_check(sk, np->dst_cookie);
+
+ if (dst == NULL) {
+ int err = ip6_dst_lookup(sk, &dst, &fl);
+
+ if (err) {
+ sk->sk_err_soft = -err;
+ kfree_skb(skb);
+ return err;
+ }
+
+ if (final_p)
+ ipv6_addr_copy(&fl.fl6_dst, final_p);
+
+ if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+ sk->sk_route_caps = 0;
+ kfree_skb(skb);
+ return err;
+ }
+
+ __inet6_csk_dst_store(sk, dst, NULL, NULL);
+ }
+
+ skb->dst = dst_clone(dst);
+
+ /* Restore final destination back after routing done */
+ ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
+
+ return ip6_xmit(sk, skb, &fl, np->opt, 0);
+}
+
+EXPORT_SYMBOL_GPL(inet6_csk_xmit);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff