Dear all, I'm currently analyzing how TCP/UDP checksum offloading works to find the best way to add SCTP checksum offloading.
sys/mbuf.h has constants: #define CSUM_IP 0x0001 /* will csum IP */ #define CSUM_TCP 0x0002 /* will csum TCP */ #define CSUM_UDP 0x0004 /* will csum UDP */ which are used to signal which offloading is supported by the drive. But, if I understand the code correctly, this only applies to UDP/IPv4 and TCP/IPv4. What about IPv6? Would this require flags like CSUM_TCP6 and CSUM_UDP6 to signal that also offloading of UDP/IPv6 and TCP/IPv6 is supported? I'm asking this because we want to add CRC offloading for SCTP/IPv4 and SCTP/IPv6. We could only add one flag CSUM_SCTP and use it for IPv4 and IPv6 ar two flags CSUM_SCTP4 and CSUM_SCTP6... Best regards Michael _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
