1 files changed, 0 insertions, 88 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0101-wireguard-send-receive-use-explicit-unlikely-branch-.patch b/target/linux/generic/backport-5.4/080-wireguard-0101-wireguard-send-receive-use-explicit-unlikely-branch-.patch
deleted file mode 100644
index 900e2f2350..0000000000
--- a/target/linux/generic/backport-5.4/080-wireguard-0101-wireguard-send-receive-use-explicit-unlikely-branch-.patch
+++ /dev/null
@@ -1,88 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: "Jason A. Donenfeld" <Jason@zx2c4.com>
-Date: Wed, 6 May 2020 15:33:06 -0600
-Subject: [PATCH] wireguard: send/receive: use explicit unlikely branch instead
- of implicit coalescing
-
-commit 243f2148937adc72bcaaa590d482d599c936efde upstream.
-
-It's very unlikely that send will become true. It's nearly always false
-between 0 and 120 seconds of a session, and in most cases becomes true
-only between 120 and 121 seconds before becoming false again. So,
-unlikely(send) is clearly the right option here.
-
-What happened before was that we had this complex boolean expression
-with multiple likely and unlikely clauses nested. Since this is
-evaluated left-to-right anyway, the whole thing got converted to
-unlikely. So, we can clean this up to better represent what's going on.
-
-The generated code is the same.
-
-Suggested-by: Sultan Alsawaf <sultan@kerneltoast.com>
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
----
- drivers/net/wireguard/receive.c | 13 ++++++-------
- drivers/net/wireguard/send.c    | 15 ++++++---------
- 2 files changed, 12 insertions(+), 16 deletions(-)
-
---- a/drivers/net/wireguard/receive.c
-+++ b/drivers/net/wireguard/receive.c
-@@ -226,21 +226,20 @@ void wg_packet_handshake_receive_worker(
- static void keep_key_fresh(struct wg_peer *peer)
- {
- 	struct noise_keypair *keypair;
--	bool send = false;
-+	bool send;
- 
- 	if (peer->sent_lastminute_handshake)
- 		return;
- 
- 	rcu_read_lock_bh();
- 	keypair = rcu_dereference_bh(peer->keypairs.current_keypair);
--	if (likely(keypair && READ_ONCE(keypair->sending.is_valid)) &&
--	    keypair->i_am_the_initiator &&
--	    unlikely(wg_birthdate_has_expired(keypair->sending.birthdate,
--			REJECT_AFTER_TIME - KEEPALIVE_TIMEOUT - REKEY_TIMEOUT)))
--		send = true;
-+	send = keypair && READ_ONCE(keypair->sending.is_valid) &&
-+	       keypair->i_am_the_initiator &&
-+	       wg_birthdate_has_expired(keypair->sending.birthdate,
-+			REJECT_AFTER_TIME - KEEPALIVE_TIMEOUT - REKEY_TIMEOUT);
- 	rcu_read_unlock_bh();
- 
--	if (send) {
-+	if (unlikely(send)) {
- 		peer->sent_lastminute_handshake = true;
- 		wg_packet_send_queued_handshake_initiation(peer, false);
- 	}
---- a/drivers/net/wireguard/send.c
-+++ b/drivers/net/wireguard/send.c
-@@ -124,20 +124,17 @@ void wg_packet_send_handshake_cookie(str
- static void keep_key_fresh(struct wg_peer *peer)
- {
- 	struct noise_keypair *keypair;
--	bool send = false;
-+	bool send;
- 
- 	rcu_read_lock_bh();
- 	keypair = rcu_dereference_bh(peer->keypairs.current_keypair);
--	if (likely(keypair && READ_ONCE(keypair->sending.is_valid)) &&
--	    (unlikely(atomic64_read(&keypair->sending.counter.counter) >
--		      REKEY_AFTER_MESSAGES) ||
--	     (keypair->i_am_the_initiator &&
--	      unlikely(wg_birthdate_has_expired(keypair->sending.birthdate,
--						REKEY_AFTER_TIME)))))
--		send = true;
-+	send = keypair && READ_ONCE(keypair->sending.is_valid) &&
-+	       (atomic64_read(&keypair->sending.counter.counter) > REKEY_AFTER_MESSAGES ||
-+		(keypair->i_am_the_initiator &&
-+		 wg_birthdate_has_expired(keypair->sending.birthdate, REKEY_AFTER_TIME)));
- 	rcu_read_unlock_bh();
- 
--	if (send)
-+	if (unlikely(send))
- 		wg_packet_send_queued_handshake_initiation(peer, false);
- }
-