However, when I debug this in Wireshark, the checksums in the packets are all 0x0000. ICMP checksum for a ping) being set correctly by the IP accelerator.

When I set these two enhanced transmit buffer descriptor bitfields, I expect to see the IP header and IP protocol checksums (e.g. These are the enhanced transmit buffer descriptor bitfields that enable hardware checksum calculation for the IP protocol checksums and IP header checksum respectively. In the Rev 2 version of the reference manual, the table I am referring to is Table 41-38 ('Enhanced transmit buffer descriptor field definitions (continued)') on p.2187, specifically the two lines beginning 'Offset + A / 12 PINS' and 'Offset + A' / 11 IINS'. Thanks for the link to the updated manual, much appreciated! All of which makes me suspect that something might be wrong with this.Īlternatively, if anyone has got this feature working, please say (and hopefully tell me what trick I'm missing)! it includes no #defines for PINS and IINS (bits 12 and 11 respectively of the same field, according to Table 40-38 on p.2283 of the IMXRT1060RM reference manual). #define ENET_BUFFDESCRIPTOR_TX_TIMESTAMP_MASK 0x2000U /*!

#define ENET_BUFFDESCRIPTOR_TX_INTERRUPT_MASK 0x4000U /*!< Interrupt mask.

I specifically ask this because even though NXP's drivers/fsl_enet.h includes #defines for the other two bits in the same enhanced transmit buffer descriptor field (at offset +0xA). My question: Was the PINS/IINS enhanced tx buffer descriptor feature implemented on the i.MX RT106x?

Setting IINS in the enhanced tx buffer descriptor (offset +0xA)Īccording to Wireshark, however, all the checksum fields still end up as 0x0000, so it seems that something is wrong.

Setting PINS in the enhanced tx buffer descriptor (offset +0xA).

:-(Īs per the reference manual, I'm setting: In my tests, it seems that these two features work separately, but then fail when combined. On the i.MX RT106x, I'm trying to combine enhanced buffer mode ( for 1588 timestamps) and the IP accelerator ( for hardware calculation of both IP header checksums and IP protocol checksums).

Checksum calculator wireshark