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| author | Tom Parkin <tparkin@katalix.com> | 2020-12-10 18:50:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-12-11 00:57:36 +0300 |
| commit | 563b603bd65db452edd66f44f66823ce6fe40a0d (patch) | |
| tree | b633e77edf2fb0e76dad0a86be929f5da0db6023 /Documentation/networking | |
| parent | 4cf476ced45d7f12df30a68e833b263e7a2202d1 (diff) | |
| download | linux-563b603bd65db452edd66f44f66823ce6fe40a0d.tar.xz | |
docs: update ppp_generic.rst to document new ioctls
Add documentation of the newly-added PPPIOCBRIDGECHAN and
PPPIOCUNBRIDGECHAN ioctls.
Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ppp_generic.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/networking/ppp_generic.rst b/Documentation/networking/ppp_generic.rst index e60504377900..5a10abce5964 100644 --- a/Documentation/networking/ppp_generic.rst +++ b/Documentation/networking/ppp_generic.rst @@ -314,6 +314,22 @@ channel are: it is connected to. It will return an EINVAL error if the channel is not connected to an interface. +* PPPIOCBRIDGECHAN bridges a channel with another. The argument should + point to an int containing the channel number of the channel to bridge + to. Once two channels are bridged, frames presented to one channel by + ppp_input() are passed to the bridge instance for onward transmission. + This allows frames to be switched from one channel into another: for + example, to pass PPPoE frames into a PPPoL2TP session. Since channel + bridging interrupts the normal ppp_input() path, a given channel may + not be part of a bridge at the same time as being part of a unit. + This ioctl will return an EALREADY error if the channel is already + part of a bridge or unit, or ENXIO if the requested channel does not + exist. + +* PPPIOCUNBRIDGECHAN performs the inverse of PPPIOCBRIDGECHAN, unbridging + a channel pair. This ioctl will return an EINVAL error if the channel + does not form part of a bridge. + * All other ioctl commands are passed to the channel ioctl() function. The ioctl calls that are available on an instance that is attached to |