#include <linux/slab.h>
#include <asm/uaccess.h>
+#include <net/addrconf.h>
#include <net/ndisc.h>
#include <net/protocol.h>
#include <net/transp_v6.h>
udp_ipv6_hash_secret + net_hash_mix(net));
}
-/* match_wildcard == true: IPV6_ADDR_ANY equals to any IPv6 addresses if IPv6
- * only, and any IPv4 addresses if not IPv6 only
- * match_wildcard == false: addresses must be exactly the same, i.e.
- * IPV6_ADDR_ANY only equals to IPV6_ADDR_ANY,
- * and 0.0.0.0 equals to 0.0.0.0 only
- */
-int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2,
- bool match_wildcard)
-{
- const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
- int sk2_ipv6only = inet_v6_ipv6only(sk2);
- int addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr);
- int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED;
-
- /* if both are mapped, treat as IPv4 */
- if (addr_type == IPV6_ADDR_MAPPED && addr_type2 == IPV6_ADDR_MAPPED) {
- if (!sk2_ipv6only) {
- if (sk->sk_rcv_saddr == sk2->sk_rcv_saddr)
- return 1;
- if (!sk->sk_rcv_saddr || !sk2->sk_rcv_saddr)
- return match_wildcard;
- }
- return 0;
- }
-
- if (addr_type == IPV6_ADDR_ANY && addr_type2 == IPV6_ADDR_ANY)
- return 1;
-
- if (addr_type2 == IPV6_ADDR_ANY && match_wildcard &&
- !(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED))
- return 1;
-
- if (addr_type == IPV6_ADDR_ANY && match_wildcard &&
- !(ipv6_only_sock(sk) && addr_type2 == IPV6_ADDR_MAPPED))
- return 1;
-
- if (sk2_rcv_saddr6 &&
- ipv6_addr_equal(&sk->sk_v6_rcv_saddr, sk2_rcv_saddr6))
- return 1;
-
- return 0;
-}
-
static u32 udp6_portaddr_hash(const struct net *net,
const struct in6_addr *addr6,
unsigned int port)
struct sock *sk, *result;
struct hlist_nulls_node *node;
int score, badness, matches = 0, reuseport = 0;
+ bool select_ok = true;
u32 hash = 0;
begin:
badness = score;
reuseport = sk->sk_reuseport;
if (reuseport) {
- struct sock *sk2;
hash = udp6_ehashfn(net, daddr, hnum,
saddr, sport);
- sk2 = reuseport_select_sock(sk, hash, skb,
- sizeof(struct udphdr));
- if (sk2) {
- result = sk2;
- goto found;
+ if (select_ok) {
+ struct sock *sk2;
+
+ sk2 = reuseport_select_sock(sk, hash, skb,
+ sizeof(struct udphdr));
+ if (sk2) {
+ result = sk2;
+ select_ok = false;
+ goto found;
+ }
}
matches = 1;
}
unsigned int hash2, slot2, slot = udp_hashfn(net, hnum, udptable->mask);
struct udp_hslot *hslot2, *hslot = &udptable->hash[slot];
int score, badness, matches = 0, reuseport = 0;
+ bool select_ok = true;
u32 hash = 0;
rcu_read_lock();
badness = score;
reuseport = sk->sk_reuseport;
if (reuseport) {
- struct sock *sk2;
hash = udp6_ehashfn(net, daddr, hnum,
saddr, sport);
- sk2 = reuseport_select_sock(sk, hash, skb,
+ if (select_ok) {
+ struct sock *sk2;
+
+ sk2 = reuseport_select_sock(sk, hash, skb,
sizeof(struct udphdr));
- if (sk2) {
- result = sk2;
- goto found;
+ if (sk2) {
+ result = sk2;
+ select_ok = false;
+ goto found;
+ }
}
matches = 1;
}