Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 2b45d14..00dc3f9 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -62,10 +62,10 @@ static u32 cookie_hash(__be32 saddr, __be32 daddr, __be16 sport, __be16 dport,
* Since subsequent timestamps use the normal tcp_time_stamp value, we
* must make sure that the resulting initial timestamp is <= tcp_time_stamp.
*/
-u64 cookie_init_timestamp(struct request_sock *req)
+u64 cookie_init_timestamp(struct request_sock *req, u64 now)
{
struct inet_request_sock *ireq;
- u32 ts, ts_now = tcp_time_stamp_raw();
+ u32 ts, ts_now = tcp_ns_to_ts(now);
u32 options = 0;
ireq = inet_rsk(req);
@@ -212,6 +212,12 @@ struct sock *tcp_get_cookie_sock(struct sock *sk, struct sk_buff *skb,
refcount_set(&req->rsk_refcnt, 1);
tcp_sk(child)->tsoffset = tsoff;
sock_rps_save_rxhash(child, skb);
+
+ if (rsk_drop_req(req)) {
+ reqsk_put(req);
+ return child;
+ }
+
if (inet_csk_reqsk_queue_add(sk, req, child))
return child;
@@ -276,6 +282,40 @@ bool cookie_ecn_ok(const struct tcp_options_received *tcp_opt,
}
EXPORT_SYMBOL(cookie_ecn_ok);
+struct request_sock *cookie_tcp_reqsk_alloc(const struct request_sock_ops *ops,
+ struct sock *sk,
+ struct sk_buff *skb)
+{
+ struct tcp_request_sock *treq;
+ struct request_sock *req;
+
+#ifdef CONFIG_MPTCP
+ if (sk_is_mptcp(sk))
+ ops = &mptcp_subflow_request_sock_ops;
+#endif
+
+ req = inet_reqsk_alloc(ops, sk, false);
+ if (!req)
+ return NULL;
+
+ treq = tcp_rsk(req);
+ treq->syn_tos = TCP_SKB_CB(skb)->ip_dsfield;
+#if IS_ENABLED(CONFIG_MPTCP)
+ treq->is_mptcp = sk_is_mptcp(sk);
+ if (treq->is_mptcp) {
+ int err = mptcp_subflow_init_cookie_req(req, sk, skb);
+
+ if (err) {
+ reqsk_free(req);
+ return NULL;
+ }
+ }
+#endif
+
+ return req;
+}
+EXPORT_SYMBOL_GPL(cookie_tcp_reqsk_alloc);
+
/* On input, sk is a listener.
* Output is listener if incoming packet would not create a child
* NULL if memory could not be allocated.
@@ -326,7 +366,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)
goto out;
ret = NULL;
- req = inet_reqsk_alloc(&tcp_request_sock_ops, sk, false); /* for safety */
+ req = cookie_tcp_reqsk_alloc(&tcp_request_sock_ops, sk, skb);
if (!req)
goto out;
@@ -349,6 +389,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb)
req->ts_recent = tcp_opt.saw_tstamp ? tcp_opt.rcv_tsval : 0;
treq->snt_synack = 0;
treq->tfo_listener = false;
+
if (IS_ENABLED(CONFIG_SMC))
ireq->smc_ok = 0;