[wpan-next,v3,00/11] ieee802154: Better Tx error handling

Message

Miquel Raynal March 3, 2022, 6:24 p.m. UTC

The idea here is to provide a fully synchronous Tx API and also be able
to be sure that a transfer as finished. This will be used later by
another series. However, while working on this task, it appeared
necessary to first rework the way MLME errors were (not) propagated to
the upper layers. This small series tries to tackle exactly that.

Changes in v3:
* Split the series into two parts, this is the "error handling" halve.
* Reworked the error path to not handle the ifs_handling situation
  anymore.
* Enhanced the list of MLME status codes available.
* Improved the error handling by collecting the error codes, somethimes
  by changing device drivers directly to propagate these MLME
  statuses. Then, once in the core, save one global Tx status value so
  that in the case of synchronous transfers we can check the return
  value and eventually error out.
* Prevented the core to stop the device before the end of the last
  transmission to avoid deadlocks by just sync'ing the last Tx
  transfer.

Changes in v2:
* Adapted with the changes already merged/refused.

Miquel Raynal (11):
  net: ieee802154: Enhance/fix the names of the MLME return codes
  net: ieee802154: Fill the list of MLME return codes
  net: mac802154: Create a transmit error helper
  net: mac802154: Save a global error code on transmissions
  net: ieee802154: at86rf230: Assume invalid TRAC if not recognized
  net: ieee802154: at86rf230: Return early in case of error
  net: ieee802154: at86rf230: Provide meaningful error codes when
    possible
  net: ieee802154: at86rf230: Call _xmit_error() when a transmission
    fails
  net: ieee802154: atusb: Call _xmit_error() when a transmission fails
  net: ieee802154: ca8210: Use core return codes instead of hardcoding
    them
  net: ieee802154: ca8210: Call _xmit_error() when a transmission fails

 drivers/net/ieee802154/at86rf230.c |  73 ++++++++----
 drivers/net/ieee802154/atusb.c     |   5 +-
 drivers/net/ieee802154/ca8210.c    | 182 +++++++++++------------------
 include/linux/ieee802154.h         |  81 +++++++++++--
 include/net/mac802154.h            |  10 ++
 net/mac802154/ieee802154_i.h       |   2 +
 net/mac802154/util.c               |  16 ++-
 7 files changed, 220 insertions(+), 149 deletions(-)