@@ -141,6 +141,27 @@ static int compute_score(struct sock *sk, struct net *net,
return score;
}
+static inline struct sock *lookup_reuseport(struct net *net, struct sock *sk,
+ struct sk_buff *skb,
+ const struct in6_addr *saddr,
+ __be16 sport,
+ const struct in6_addr *daddr,
+ unsigned int hnum)
+{
+ struct sock *reuse_sk = NULL;
+ u32 hash;
+
+ if (sk->sk_reuseport && sk->sk_state != TCP_ESTABLISHED) {
+ hash = udp6_ehashfn(net, daddr, hnum, saddr, sport);
+ reuse_sk = reuseport_select_sock(sk, hash, skb,
+ sizeof(struct udphdr));
+ /* Fall back to scoring if group has connections */
+ if (reuseport_has_conns(sk, false))
+ return NULL;
+ }
+ return reuse_sk;
+}
+
/* called with rcu_read_lock() */
static struct sock *udp6_lib_lookup2(struct net *net,
const struct in6_addr *saddr, __be16 sport,
@@ -150,7 +171,6 @@ static struct sock *udp6_lib_lookup2(struct net *net,
{
struct sock *sk, *result;
int score, badness;
- u32 hash = 0;
result = NULL;
badness = -1;
@@ -158,16 +178,11 @@ static struct sock *udp6_lib_lookup2(struct net *net,
score = compute_score(sk, net, saddr, sport,
daddr, hnum, dif, sdif);
if (score > badness) {
- if (sk->sk_reuseport &&
- sk->sk_state != TCP_ESTABLISHED) {
- hash = udp6_ehashfn(net, daddr, hnum,
- saddr, sport);
-
- result = reuseport_select_sock(sk, hash, skb,
- sizeof(struct udphdr));
- if (result && !reuseport_has_conns(sk, false))
- return result;
- }
+ result = lookup_reuseport(net, sk, skb,
+ saddr, sport, daddr, hnum);
+ if (result)
+ return result;
+
result = sk;
badness = score;
}
Prepare for calling into reuseport from __udp6_lib_lookup as well. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> --- net/ipv6/udp.c | 37 ++++++++++++++++++++++++++----------- 1 file changed, 26 insertions(+), 11 deletions(-)