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path: root/net/ipv6/inet6_connection_sock.c
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Diffstat (limited to 'net/ipv6/inet6_connection_sock.c')
-rw-r--r--net/ipv6/inet6_connection_sock.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index b7acb9ebc4f5..2f3bbe569e8f 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -112,21 +112,20 @@ static u32 inet6_synq_hash(const struct in6_addr *raddr, const __be16 rport,
return c & (synq_hsize - 1);
}
-struct request_sock *inet6_csk_search_req(const struct sock *sk,
+struct request_sock *inet6_csk_search_req(struct sock *sk,
const __be16 rport,
const struct in6_addr *raddr,
const struct in6_addr *laddr,
const int iif)
{
- const struct inet_connection_sock *icsk = inet_csk(sk);
+ struct inet_connection_sock *icsk = inet_csk(sk);
struct listen_sock *lopt = icsk->icsk_accept_queue.listen_opt;
struct request_sock *req;
+ u32 hash = inet6_synq_hash(raddr, rport, lopt->hash_rnd,
+ lopt->nr_table_entries);
- for (req = lopt->syn_table[inet6_synq_hash(raddr, rport,
- lopt->hash_rnd,
- lopt->nr_table_entries)];
- req != NULL;
- req = req->dl_next) {
+ write_lock(&icsk->icsk_accept_queue.syn_wait_lock);
+ for (req = lopt->syn_table[hash]; req != NULL; req = req->dl_next) {
const struct inet_request_sock *ireq = inet_rsk(req);
if (ireq->ir_rmt_port == rport &&
@@ -134,12 +133,14 @@ struct request_sock *inet6_csk_search_req(const struct sock *sk,
ipv6_addr_equal(&ireq->ir_v6_rmt_addr, raddr) &&
ipv6_addr_equal(&ireq->ir_v6_loc_addr, laddr) &&
(!ireq->ir_iif || ireq->ir_iif == iif)) {
+ atomic_inc(&req->rsk_refcnt);
WARN_ON(req->sk != NULL);
- return req;
+ break;
}
}
+ write_unlock(&icsk->icsk_accept_queue.syn_wait_lock);
- return NULL;
+ return req;
}
EXPORT_SYMBOL_GPL(inet6_csk_search_req);