kernel-5.4: bump to 5.4.102 and refresh patches

5.4.102 backported a lot of stuff that our WireGuard backport already
did, in addition to other patches we had, so those patches were
removed from that part of the series. In the process other patches were
refreshed or reworked to account for upstream changes.

This commit involved `update_kernel.sh -v -u 5.4`.

Cc: John Audia <graysky@archlinux.us>
Cc: David Bauer <mail@david-bauer.net>
Cc: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.4/080-wireguard-0119-wireguard-selftests-test-multiple-parallel-streams.patch b/target/linux/generic/backport-5.4/080-wireguard-0119-wireguard-selftests-test-multiple-parallel-streams.patch
new file mode 100644
index 0000000000..3093de45f7
--- /dev/null
+++ b/target/linux/generic/backport-5.4/080-wireguard-0119-wireguard-selftests-test-multiple-parallel-streams.patch
@@ -0,0 +1,52 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Jason A. Donenfeld" <Jason@zx2c4.com>
+Date: Mon, 22 Feb 2021 17:25:45 +0100
+Subject: [PATCH] wireguard: selftests: test multiple parallel streams
+
+commit d5a49aa6c3e264a93a7d08485d66e346be0969dd upstream.
+
+In order to test ndo_start_xmit being called in parallel, explicitly add
+separate tests, which should all run on different cores. This should
+help tease out bugs associated with queueing up packets from different
+cores in parallel. Currently, it hasn't found those types of bugs, but
+given future planned work, this is a useful regression to avoid.
+
+Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+---
+ tools/testing/selftests/wireguard/netns.sh | 15 ++++++++++++++-
+ 1 file changed, 14 insertions(+), 1 deletion(-)
+
+--- a/tools/testing/selftests/wireguard/netns.sh
++++ b/tools/testing/selftests/wireguard/netns.sh
+@@ -39,7 +39,7 @@ ip0() { pretty 0 "ip $*"; ip -n $netns0
+ ip1() { pretty 1 "ip $*"; ip -n $netns1 "$@"; }
+ ip2() { pretty 2 "ip $*"; ip -n $netns2 "$@"; }
+ sleep() { read -t "$1" -N 1 || true; }
+-waitiperf() { pretty "${1//*-}" "wait for iperf:5201 pid $2"; while [[ $(ss -N "$1" -tlpH 'sport = 5201') != *\"iperf3\",pid=$2,fd=* ]]; do sleep 0.1; done; }
++waitiperf() { pretty "${1//*-}" "wait for iperf:${3:-5201} pid $2"; while [[ $(ss -N "$1" -tlpH "sport = ${3:-5201}") != *\"iperf3\",pid=$2,fd=* ]]; do sleep 0.1; done; }
+ waitncatudp() { pretty "${1//*-}" "wait for udp:1111 pid $2"; while [[ $(ss -N "$1" -ulpH 'sport = 1111') != *\"ncat\",pid=$2,fd=* ]]; do sleep 0.1; done; }
+ waitiface() { pretty "${1//*-}" "wait for $2 to come up"; ip netns exec "$1" bash -c "while [[ \$(< \"/sys/class/net/$2/operstate\") != up ]]; do read -t .1 -N 0 || true; done;"; }
+ 
+@@ -141,6 +141,19 @@ tests() {
+ 	n2 iperf3 -s -1 -B fd00::2 &
+ 	waitiperf $netns2 $!
+ 	n1 iperf3 -Z -t 3 -b 0 -u -c fd00::2
++
++	# TCP over IPv4, in parallel
++	for max in 4 5 50; do
++		local pids=( )
++		for ((i=0; i < max; ++i)) do
++			n2 iperf3 -p $(( 5200 + i )) -s -1 -B 192.168.241.2 &
++			pids+=( $! ); waitiperf $netns2 $! $(( 5200 + i ))
++		done
++		for ((i=0; i < max; ++i)) do
++			n1 iperf3 -Z -t 3 -p $(( 5200 + i )) -c 192.168.241.2 &
++		done
++		wait "${pids[@]}"
++	done
+ }
+ 
+ [[ $(ip1 link show dev wg0) =~ mtu\ ([0-9]+) ]] && orig_mtu="${BASH_REMATCH[1]}"