mbuf_tag_find

Declaration

errno_t mbuf_tag_find(mbuf_t mbuf, mbuf_tag_id_t module_id, mbuf_tag_type_t type, size_t *length, void **data_p);

Parameters

• mbuf:

  The mbuf the tag is attached to.

• module_id:

  A module identifier returned by mbuf_tag_id_find.

• type:

  The 16 bit type of the tag to find.

• length:

  Upon success, the length of data will be store in *length.

• data_p:

  Upon successful return, *data_p will point to the buffer allocated for the mtag.

Return Value

0 upon success otherwise the errno error.

Discussion

Find the data associated with an mbuf tag.