Hi all, i'm using the old J1939 kernel implementation (with iproute2 specific), but it seems transport layer as not change a lot. Here is my problem: on my board i setup an interface, with 0x4a as SA. On a canalyzer i send a 0x0F segmented packet: 0x18EC214Ax: 10 0F 00 03 FF CD FF 00 ==> RTS 0x18EC4A21x: 11 03 01 FF FF CD FF 00 ==> CTS 0x18EB214Ax: 01 B2 1E 78 4D 61 72 6B ==> DT 0x18EB214Ax: 02 73 74 68 65 73 70 6F ==> DT 0x18EB214Ax: 03 74 FF FF FF FF FF FF==> DT instead of sending an acknowledge, the board send an abort frame, with 0x05 reason: 0x18EC4A21x: FF 05 FF FF FF CD FF 00. After activating some debug log in the kernel, i see that when i receive the first Data Transfer frame, i get the error message: j1939xtp_rx_dat: last 10 if i look into the function j1939xtp_rx_dat, i see that the switch on last_cmd wait BAM (0x20 or CTS 0x11), but for me it should wait RTS (0x10, as last_cmd is not modified when sending the CTS (last_tx_cmd is updated at this step) i've tried to modify but the behaviour is worst as there is some retrasnmission of the CTS frame Would you have an idea on this behaviour? thanks in advance for your help Best regards Laurent
