Change Details

D49677 introduced the new function `in_delayed_cksum_o` in ip_output.c that computes the checksum even if the mbuf does not start with the IP header by using the parameter `offset` as the offset to the IP header. If the `offset` is larger than 0, this function computes a wrong checksum for a TCP packet. For a TCP packet, it calls `in_cksum_skip` with the IP total length field value as second parameter, where `in_cksum_skip` expects the length of the mbuf.

D49677 introduced the new function `in_delayed_cksum_o` in ip_output.c that computes the checksum even if the mbuf does not start with the IP header by using the parameter `iph_offset` as the offset to the IP header. If the `iph_offset` is larger than 0, this function computes a wrong checksum for a TCP packet. For a TCP packet, it calls `in_cksum_skip` with the IP total length field value as second parameter, where `in_cksum_skip` expects the length of the mbuf.

D49677 introduced the new function `in_delayed_cksum_o` in ip_output.c that computes the checksum even if the mbuf does not start with the IP header by using the parameter `iph_offset` as the offset to the IP header. If the `iph_offset` is larger than 0, this function computes a wrong checksum for a TCP packet. For a TCP packet, it calls `in_cksum_skip` with the IP total length field value as second parameter, where `in_cksum_skip` expects the length of the mbuf.