wireguard: receive: reset last_under_load to zero (2a8a4df3) · Commits · 戴 / test

This is a small optimization that prevents more expensive comparisons from happening when they are no longer necessary, by clearing the last_under_load variable whenever we wind up in a state where we were under load but we no longer are. Signed-off-by:

Jason A. Donenfeld <Jason@zx2c4.com> Suggested-by:

Matt Dunwoodie <ncon@noconroy.net> Signed-off-by:

David S. Miller <davem@davemloft.net>

drivers/net/wireguard/receive.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -118,10 +118,13 @@ static void wg_receive_handshake_packet(struct wg_device *wg,

		under_load = skb_queue_len(&wg->incoming_handshakes) >=
		MAX_QUEUED_INCOMING_HANDSHAKES / 8;
		if (under_load)
		if (under_load) {
		last_under_load = ktime_get_coarse_boottime_ns();
		else if (last_under_load)
		} else if (last_under_load) {
		under_load = !wg_birthdate_has_expired(last_under_load, 1);
		if (!under_load)
		last_under_load = 0;
		}
		mac_state = wg_cookie_validate_packet(&wg->cookie_checker, skb,
		under_load);
		if ((under_load && mac_state == VALID_MAC_WITH_COOKIE) \|\|

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