Hi Marc et al, I am running the canfdtest (can-utils-2020.02.04) on flexcan interface running in loopback mode: # ip link set can1 up type can bitrate 125000 loopback on # canfdtest -v -g can1 interface = can1, family = 29, type = 3, proto = 1 Databyte 0 mismatch ! expected: 0077: [8] 01 02 03 04 05 06 07 08 received: 0077: [8] 00 01 02 03 04 05 06 07 Databyte 1 mismatch ! expected: 0077: [8] 01 02 03 04 05 06 07 08 received: 0077: [8] 00 01 02 03 04 05 06 07 Databyte 2 mismatch ! expected: 0077: [8] 01 02 03 04 05 06 07 08 received: 0077: [8] 00 01 02 03 04 05 06 07 Databyte 3 mismatch ! expected: 0077: [8] 01 02 03 04 05 06 07 08 received: 0077: [8] 00 01 02 03 04 05 06 07 Databyte 4 mismatch ! expected: 0077: [8] 01 02 03 04 05 06 07 08 received: 0077: [8] 00 01 02 03 04 05 06 07 Databyte 5 mismatch ! expected: 0077: [8] 01 02 03 04 05 06 07 08 received: 0077: [8] 00 01 02 03 04 05 06 07 Databyte 6 mismatch ! expected: 0077: [8] 01 02 03 04 05 06 07 08 received: 0077: [8] 00 01 02 03 04 05 06 07 Databyte 7 mismatch ! expected: 0077: [8] 01 02 03 04 05 06 07 08 received: 0077: [8] 00 01 02 03 04 05 06 07 Test messages sent and received: 0 Exiting... However when I run cangen, then the order of frames is fine: # candump can1 & # cangen -n 100 can1 can1 4B2 [6] 65 BD 28 6D 49 0A can1 4B2 [6] 65 BD 28 6D 49 0A can1 7FF [8] 8D 05 E2 50 B0 C0 8D 79 can1 7FF [8] 8D 05 E2 50 B0 C0 8D 79 can1 397 [0] can1 397 [0] can1 3A2 [0] can1 3A2 [0] can1 143 [8] 22 A1 C5 56 FF 24 15 3A can1 143 [8] 22 A1 C5 56 FF 24 15 3A can1 036 [8] 6D 5B 6C 6D E8 39 E6 5E can1 036 [8] 6D 5B 6C 6D E8 39 E6 5E can1 393 [0] can1 393 [0] can1 5FC [6] 42 CC F2 57 AE 22 can1 5FC [6] 42 CC F2 57 AE 22 can1 08C [7] F8 2C BD 6F 8B 98 53 can1 08C [7] F8 2C BD 6F 8B 98 53 can1 4E1 [5] 3C 59 E1 3D 78 can1 4E1 [5] 3C 59 E1 3D 78 can1 6D6 [6] 5D AF EF 06 78 EA can1 6D6 [6] 5D AF EF 06 78 EA can1 217 [7] 10 DB EC 26 5A F3 49 can1 217 [7] 10 DB EC 26 5A F3 49 can1 072 [2] 59 18 can1 072 [2] 59 18 can1 5BF [7] 91 BA 17 7F 52 F1 0D can1 5BF [7] 91 BA 17 7F 52 F1 0D can1 307 [2] C9 DA can1 307 [2] C9 DA can1 628 [8] B2 9B 31 26 B4 46 10 30 can1 628 [8] B2 9B 31 26 B4 46 10 30 can1 0B2 [8] 3F DF 63 74 94 6D 33 4B can1 0B2 [8] 3F DF 63 74 94 6D 33 4B can1 330 [8] 0C BE 31 4B 06 FA 5C 78 can1 330 [8] 0C BE 31 4B 06 FA 5C 78 can1 142 [8] 7E E4 3E 69 59 7B 28 64 can1 142 [8] 7E E4 3E 69 59 7B 28 64 can1 511 [8] B3 6E 72 1F 83 6D FF 3A can1 511 [8] B3 6E 72 1F 83 6D FF 3A can1 3C1 [8] 2C EE 30 5B 80 79 51 13 can1 3C1 [8] 2C EE 30 5B 80 79 51 13 can1 2D4 [8] D2 6A 5F 00 DB ED D4 38 can1 2D4 [8] D2 6A 5F 00 DB ED D4 38 can1 3F0 [8] DF 66 77 38 18 A2 1D 4D can1 3F0 [8] DF 66 77 38 18 A2 1D 4D I am using the latest Linux-stable-rc kernel (v5.9-rc2). Is this known issue/limitation with canfdtest application ? Regards, Pankaj Bansal
