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|man pages section 9: DDI and DKI Properties and Data Structures Oracle Solaris 11 Information Library|
- STREAMS data structure sent to multiplexor drivers to indicate a link
Architecture independent level 1 (DDI/DKI)
The linkblk structure is used to connect a lower Stream to an upper STREAMS multiplexor driver. This structure is used in conjunction with the I_LINK, I_UNLINK, P_LINK, and P_UNLINK ioctl commands. See streamio(7I). The M_DATA portion of the M_IOCTL message contains the linkblk structure. Note that the linkblk structure is allocated and initialized by the Stream head as a result of one of the above ioctl commands.
queue_t *l_qtop; /* lowest level write queue of upper stream */ /* (set to NULL for persistent links) */ queue_t *l_qbot; /* highest level write queue of lower stream */ int l_index; /* index for lower stream. */