mbuf_copydata

Declaration

errno_t mbuf_copydata(const mbuf_t mbuf, size_t offset, size_t length, void *out_data);

Parameters

• mbuf:

  The mbuf chain to copy data out of.

• offset:

  The offset in to the mbuf to start copying.

• length:

  The number of bytes to copy.

• out_data:

  A pointer to the location where the data will be copied.

Return Value

0 upon success otherwise the errno error.

Discussion

Copies data out of an mbuf in to a specified buffer. If the data is stored in a chain of mbufs, the data will be copied from each mbuf in the chain until length bytes have been copied.