[PATCH 00/18] smbdirect/client/server: improved error handling and other small improvements

[Stefan Metzmacher <metze@samba.org>]

Hi,

here are some patches basically on top of the other
smbdirect patches, which let us use common structures, see:
https://lore.kernel.org/linux-cifs/cover.1756139607.git.metze@samba.org/

They improve the error handling in all kind of situations,
we now consistently reset SMBDIRECT_SOCKET_CONNECTED on
the first error and wake up all waiters to notice
the state change.

We also disable all work consistently on error.

We consistently use spin_lock_irq{save,restore}() now.

There are also some improvements in order to make
further refactoring easier:
 - E.g. move ib_alloc_pd() and ib_dma_map_single() on the client.
 - On the server use ib_alloc_cq_any()
 - let smb_direct_flush_send_list() invalidate a remote key in
   the first message

Some of these are already in Steve's for-next-next branch.
I'll soon provide a branch that can replace for-next-next,
as some of these patches should be moved before some existing
patches, while dropping some of the patches from for-next-next.
So that we only have patches for 6.18 included, the rest will
be deferred to 6.19.

Stefan Metzmacher (18):
  smb: smbdirect/client: introduce SMBDIRECT_SOCKET_ERROR
  smb: smbdirect: let smbdirect_socket_init() initialize all
    [delayed_]work_structs as disabled
  smb: smbdirect: introduce smbdirect_socket.first_error
  smb: client: let smbd_disconnect_rdma_connection() set
    SMBDIRECT_SOCKET_ERROR...
  smb: client: fill in smbdirect_socket.first_error on error
  smb: client: let smbd_disconnect_rdma_connection() disable all work
    but disconnect_work
  smb: client: let smbd_{destroy,disconnect_rdma_{work,connection}}()
    wake up all wait queues
  smb: client: make consitent use of spin_lock_irq{save,restore}() in
    smbdirect.c
  smb: client: allocate smbdirect workqueue at the beginning of
    _smbd_get_connection()
  smb: client: defer calling ib_alloc_pd() after we are connected
  smb: client: let smbd_post_send_iter() call ib_dma_map_single() for
    the header first
  smb: server: let smb_direct_disconnect_rdma_connection() set
    SMBDIRECT_SOCKET_ERROR...
  smb: server: fill in smbdirect_socket.first_error on error
  smb: server: let smb_direct_disconnect_rdma_connection() disable all
    work but disconnect_work
  smb: server: let
    {free_transport,smb_direct_disconnect_rdma_{work,connection}}() wake
    up all wait queues
  smb: server: make consitent use of spin_lock_irq{save,restore}() in
    transport_rdma.c
  smb: server: make use of ib_alloc_cq_any() instead of ib_alloc_cq()
  smb: server: let smb_direct_flush_send_list() invalidate a remote key
    first

 fs/smb/client/smbdirect.c                  | 224 +++++++++++++++------
 fs/smb/common/smbdirect/smbdirect_socket.h |  24 +++
 fs/smb/server/transport_rdma.c             | 157 ++++++++++++---
 3 files changed, 309 insertions(+), 96 deletions(-)

-- 
2.43.0