diff options
| author |   Jason Gunthorpe <jgg@nvidia.com> | 2020-07-23 10:07:04 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-07-29 14:10:01 -0300 |
| commit | d54f23c09ec62670901f1a2a4712a5218522ca2b (patch) | |
| tree | 130ce7ad5538758d052cedb29c53704d8a5d1f4c /drivers/infiniband/core | |
| parent | RDMA/efa: Add EFA 0xefa1 PCI ID (diff) | |
| download | linux-dev-d54f23c09ec62670901f1a2a4712a5218522ca2b.tar.xz linux-dev-d54f23c09ec62670901f1a2a4712a5218522ca2b.zip | |
RDMA/cma: Simplify DEVICE_REMOVAL for internal_id
cma_process_remove() triggers an unconditional rdma_destroy_id() for
internal_id's and skips the event deliver and transition through
RDMA_CM_DEVICE_REMOVAL.
This is confusing and unnecessary. internal_id always has
cma_listen_handler() as the handler, have it catch the
RDMA_CM_DEVICE_REMOVAL event and directly consume it and signal removal.
This way the FSM sequence never skips the DEVICE_REMOVAL case and the
logic in this hard to test area is simplified.
Link: https://lore.kernel.org/r/20200723070707.1771101-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/cma.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 3d7cc9f0f3d4..77743ce5216b 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2478,6 +2478,10 @@ static int cma_listen_handler(struct rdma_cm_id *id, { struct rdma_id_private *id_priv = id->context; + /* Listening IDs are always destroyed on removal */ + if (event->event == RDMA_CM_EVENT_DEVICE_REMOVAL) + return -1; + id->context = id_priv->id.context; id->event_handler = id_priv->id.event_handler; trace_cm_event_handler(id_priv, event); @@ -4811,7 +4815,7 @@ static void cma_process_remove(struct cma_device *cma_dev) cma_id_get(id_priv); mutex_unlock(&lock); - ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); + ret = cma_remove_id_dev(id_priv); cma_id_put(id_priv); if (ret) rdma_destroy_id(&id_priv->id); |