linux/include/uapi
Jeremy Kerr a0c2ccd9b5 mctp: Add MCTP-over-serial transport binding
This change adds a MCTP Serial transport binding, as defined by DMTF
specificiation DSP0253 - "MCTP Serial Transport Binding". This is
implemented as a new serial line discipline, and can be attached to
arbitrary tty devices.

From the Kconfig description:

  This driver provides an MCTP-over-serial interface, through a
  serial line-discipline, as defined by DMTF specification "DSP0253 -
  MCTP Serial Transport Binding". By attaching the ldisc to a serial
  device, we get a new net device to transport MCTP packets.

  This allows communication with external MCTP endpoints which use
  serial as their transport. It can also be used as an easy way to
  provide MCTP connectivity between virtual machines, by forwarding
  data between simple virtual serial devices.

  Say y here if you need to connect to MCTP endpoints over serial. To
  compile as a module, use m; the module will be called mctp-serial.

Once the N_MCTP line discipline is set [using ioctl(TCIOSETD)], we get a
new netdev suitable for MCTP communication.

The 'mctp' utility[1] provides a simple wrapper for this ioctl, using
'link serial <device>':

  # mctp link serial /dev/ttyS0 &
  # mctp link
  dev lo index 1 address 0x00:00:00:00:00:00 net 1 mtu 65536 up
  dev mctpserial0 index 5 address 0x(no-addr) net 1 mtu 68 down

[1]: https://github.com/CodeConstruct/mctp

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-11-23 11:47:51 +00:00
..
asm-generic Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-11-10 16:15:54 -08:00
drm drm for 5.16-rc1 2021-11-02 16:47:49 -07:00
linux mctp: Add MCTP-over-serial transport binding 2021-11-23 11:47:51 +00:00
misc habanalabs: define uAPI to export FD for DMA-BUF 2021-10-18 12:05:47 +03:00
mtd mtd: add OTP (one-time-programmable) erase ioctl 2021-03-28 19:24:54 +02:00
rdma RDMA v5.16 merge window pull request 2021-11-03 08:05:59 -07:00
scsi scsi: fc: Add EDC ELS definition 2021-08-24 22:56:33 -04:00
sound sound updates for 5.16-rc1 2021-11-03 07:49:25 -07:00
video
xen
Kbuild