K 10
svn:author
V 7
thompsa
K 8
svn:date
V 27
2008-10-03T05:14:54.446474Z
K 7
svn:log
V 476
Update ng_tty for MPSAFE TTY.

This changes from a line discipline to the tty_hooks mechanism. Data will come
in directly via rint_bypass and sent to the peer node in a single mbuf.

As line disciplines are no longer used a new netgraph command called
NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open
file descriptor of the tty and registers the tty hooks. When the tty disappears
the node will shutdown.

Thanks to:	ed
Sponsored by:	Hobnob, Inc

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