diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2020-02-14 23:57:21 +0100 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2020-12-31 19:40:42 +0200 |
| commit | d59b0cc33e99b179ee6ffecb7eb261ac4f645ca6 (patch) | |
| tree | a0001e293e3a562eb802aafdfe333af343a21635 /drivers/net/wireguard | |
| parent | 0bc37fdddb37838172f08dfc3f8f538f20ec8682 (diff) | |
UPSTREAM: wireguard: receive: reset last_under_load to zero
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>
(cherry picked from commit 2a8a4df36462aa85b0db87b7c5ea145ba67e34a8)
Bug: 152722841
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I87d5a99e857f1d1ec5e683e2540cba40b03b833b
Diffstat (limited to 'drivers/net/wireguard')
| -rw-r--r-- | drivers/net/wireguard/receive.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/wireguard/receive.c b/drivers/net/wireguard/receive.c index 9c6bab9c981f..4a153894cee2 100644 --- a/drivers/net/wireguard/receive.c +++ b/drivers/net/wireguard/receive.c @@ -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) || |