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6de5bd128d
With all the patches we have queued in the BKL removal tree, only a few dozen modules are left that actually rely on the BKL, and even there are lots of low-hanging fruit. We need to decide what to do about them, this patch illustrates one of the options: Every user of the BKL is marked as 'depends on BKL' in Kconfig, and the CONFIG_BKL becomes a user-visible option. If it gets disabled, no BKL using module can be built any more and the BKL code itself is compiled out. The one exception is file locking, which is practically always enabled and does a 'select BKL' instead. This effectively forces CONFIG_BKL to be enabled until we have solved the fs/lockd mess and can apply the patch that removes the BKL from fs/locks.c. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
37 lines
1.6 KiB
Text
37 lines
1.6 KiB
Text
#
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# CCITT X.25 Packet Layer
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#
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config X25
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tristate "CCITT X.25 Packet Layer (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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depends on BKL # should be fixable
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---help---
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X.25 is a set of standardized network protocols, similar in scope to
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frame relay; the one physical line from your box to the X.25 network
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entry point can carry several logical point-to-point connections
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(called "virtual circuits") to other computers connected to the X.25
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network. Governments, banks, and other organizations tend to use it
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to connect to each other or to form Wide Area Networks (WANs). Many
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countries have public X.25 networks. X.25 consists of two
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protocols: the higher level Packet Layer Protocol (PLP) (say Y here
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if you want that) and the lower level data link layer protocol LAPB
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(say Y to "LAPB Data Link Driver" below if you want that).
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You can read more about X.25 at <http://www.sangoma.com/x25.htm> and
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<http://www.cisco.com/univercd/cc/td/doc/product/software/ios11/cbook/cx25.htm>.
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Information about X.25 for Linux is contained in the files
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<file:Documentation/networking/x25.txt> and
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<file:Documentation/networking/x25-iface.txt>.
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One connects to an X.25 network either with a dedicated network card
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using the X.21 protocol (not yet supported by Linux) or one can do
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X.25 over a standard telephone line using an ordinary modem (say Y
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to "X.25 async driver" below) or over Ethernet using an ordinary
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Ethernet card and the LAPB over Ethernet (say Y to "LAPB Data Link
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Driver" and "LAPB over Ethernet driver" below).
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To compile this driver as a module, choose M here: the module
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will be called x25. If unsure, say N.
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