not working hw crypto with snapshot openwrt

[proffust]

Hello.
I build snapshot release openwrt and no acceleration crypto. iperf show me 50mbit/s with encryption and 130 without. connection l2tp with ipsec

root@OpenWrt:~# dmesg | grep eip
[    1.470845] mtk-eip93 1e004000.crypto: EIP93 Crypto Engine Initialized.
root@OpenWrt:~#  swanctl -l
myvpn: #1, ESTABLISHED, IKEv1, b9f11af4286b6b7b_i* 8f8e92f4d7df4da3_r
  local  '10.43.8.34' @ 10.43.8.34[4500]
  remote '80.82.49.19' @ 80.82.49.19[4500]
  AES_CBC-256/HMAC_SHA2_256_128/PRF_HMAC_SHA2_256/MODP_2048
  established 631s ago, rekeying in 12460s
  myvpn: #1, reqid 1, INSTALLED, TRANSPORT-in-UDP, ESP:AES_CBC-256/HMAC_SHA2_256_128/MODP_2048
    installed 631s ago, rekeying in 2685s, expires in 3330s
    in  c0db5e29, 3435588 bytes, 37613 packets,     5s ago
    out 08c19687, 104779986 bytes, 72168 packets,    15s ago
    local  10.43.8.34/32[0/l2f]
    remote 80.82.49.19/32
root@OpenWrt:~# iperf3 -c 2001:470:78b9:6666:e65f:1ff:fe44:457
Connecting to host 2001:470:78b9:6666:e65f:1ff:fe44:457, port 5201
[  5] local 2001:470:78b9:13::1 port 47700 connected to 2001:470:78b9:6666:e65f:1ff:fe44:457 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  6.07 MBytes  50.9 Mbits/sec    0    140 KBytes       
[  5]   1.00-2.00   sec  6.25 MBytes  52.5 Mbits/sec    0    148 KBytes       
[  5]   2.00-3.00   sec  6.01 MBytes  50.4 Mbits/sec    0    156 KBytes       
[  5]   3.00-4.00   sec  6.19 MBytes  51.9 Mbits/sec    0    158 KBytes       
[  5]   4.00-5.00   sec  6.01 MBytes  50.4 Mbits/sec    0    174 KBytes       
[  5]   5.00-6.02   sec  5.84 MBytes  48.2 Mbits/sec    0    198 KBytes       
[  5]   6.02-7.00   sec  6.81 MBytes  58.1 Mbits/sec    0    198 KBytes       
[  5]   7.00-8.00   sec  6.68 MBytes  56.1 Mbits/sec    0    198 KBytes       
[  5]   8.00-9.00   sec  6.38 MBytes  53.5 Mbits/sec    0    198 KBytes       
[  5]   9.00-10.00  sec  6.50 MBytes  54.5 Mbits/sec    0    198 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  62.7 MBytes  52.6 Mbits/sec    0             sender
[  5]   0.00-10.01  sec  62.3 MBytes  52.2 Mbits/sec                  receiver

terminate ipsec

iperf Done.
root@OpenWrt:~# swanctl --terminate --child myvpn
[IKE] closing CHILD_SA myvpn{1} with SPIs c0db5e29_i (5709511 bytes) 08c19687_o (174454475 bytes) and TS 10.43.8.34/32[0/l2f] === 80.82.49.19/32
terminate completed successfully

root@OpenWrt:~# iperf3 -c 2001:470:78b9:6666:e65f:1ff:fe44:457
Connecting to host 2001:470:78b9:6666:e65f:1ff:fe44:457, port 5201
[  5] local 2001:470:78b9:13::1 port 47706 connected to 2001:470:78b9:6666:e65f:1ff:fe44:457 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.02   sec  16.5 MBytes   136 Mbits/sec    0    236 KBytes       
[  5]   1.02-2.03   sec  17.5 MBytes   145 Mbits/sec    0    238 KBytes       
[  5]   2.03-3.02   sec  15.0 MBytes   126 Mbits/sec    0    252 KBytes       
[  5]   3.02-4.04   sec  17.5 MBytes   145 Mbits/sec    0    252 KBytes       
[  5]   4.04-5.04   sec  16.8 MBytes   140 Mbits/sec    0    362 KBytes       
[  5]   5.04-6.03   sec  13.8 MBytes   117 Mbits/sec    0    378 KBytes       
[  5]   6.03-7.00   sec  17.5 MBytes   150 Mbits/sec    0    378 KBytes       
[  5]   7.00-8.06   sec  18.8 MBytes   149 Mbits/sec    0    378 KBytes       
[  5]   8.06-9.04   sec  15.0 MBytes   128 Mbits/sec    0    378 KBytes       
[  5]   9.04-10.01  sec  17.5 MBytes   152 Mbits/sec    0    574 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.01  sec   166 MBytes   139 Mbits/sec    0             sender
[  5]   0.00-10.01  sec   165 MBytes   138 Mbits/sec                  receiver

iperf Done.
root@OpenWrt:~# uname -a
Linux OpenWrt 5.10.112 #0 SMP Sun Apr 24 21:09:51 2022 mips GNU/Linux

[proffust]

compilation from final branch, according to instructions "add the 999-patch to the OpenWrt /target/linux/ramips/patch-5.10 folder and the crypto/mtk-eip93 folder to the /target/linux/files/drivers folder"

[rdslw]

I confirm that building openwrt 21.02 with these patches, significantly improves FDE (cryptsetup) benchmarks. I did a custom build.
Intuition tells me, that without specific CFG, vpn traffic, due to small sizes of packets will not gain from it, or even will lose (worse performance).