diff options
| author | Parav Pandit <parav@mellanox.com> | 2018-08-28 14:45:32 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-09-06 22:35:16 +0300 |
| commit | 722c7b2bfeadbae8d9aaa08552c456e09d17a7f7 (patch) | |
| tree | 5358c1e33da4d484588fe2ab0de7b1cc65f930e7 /drivers/infiniband | |
| parent | f9d08f1e1939ad4d92e38bd3dee6842512f5bee6 (diff) | |
| download | linux-722c7b2bfeadbae8d9aaa08552c456e09d17a7f7.tar.xz | |
RDMA/{cma, core}: Avoid callback on rdma_addr_cancel()
Currently rdma_addr_cancel() is an async operation, which notifies that
cancel is done by executing the callback function given during
rdma_resolve_ip(). If resolve_ip request is already completed than
callback is not executed.
Instead, now rdma_resolve_addr() and rdma_addr_cancel() simplified in
following ways.
1. rdma_addr_cancel() now a synchronous method. If request was
pending, after it is cancelled, no callback is notified.
2. rdma_resolve_addr() and respective addr_handler() callback doesn't
need to hold reference to cm_id.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/addr.c | 12 | ||||
| -rw-r--r-- | drivers/infiniband/core/cma.c | 4 |
2 files changed, 7 insertions, 9 deletions
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c index 46b855a42884..94ff38731be8 100644 --- a/drivers/infiniband/core/addr.c +++ b/drivers/infiniband/core/addr.c @@ -660,6 +660,13 @@ int rdma_resolve_ip_route(struct sockaddr *src_addr, return addr_resolve(src_in, dst_addr, addr, false, 0); } +/** + * rdma_addr_cancel - Cancel resolve ip request + * @addr: Pointer to address structure given previously + * during rdma_resolve_ip(). + * rdma_addr_cancel() is synchronous function which cancels any pending + * request if there is any. + */ void rdma_addr_cancel(struct rdma_dev_addr *addr) { struct addr_req *req, *temp_req; @@ -687,11 +694,6 @@ void rdma_addr_cancel(struct rdma_dev_addr *addr) * guarentees no work is running and none will be started. */ cancel_delayed_work_sync(&found->work); - - if (found->callback) - found->callback(-ECANCELED, (struct sockaddr *)&found->src_addr, - found->addr, found->context); - kfree(found); } EXPORT_SYMBOL(rdma_addr_cancel); diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index f72677291b69..4ba77f4e7098 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2880,13 +2880,11 @@ static void addr_handler(int status, struct sockaddr *src_addr, if (id_priv->id.event_handler(&id_priv->id, &event)) { cma_exch(id_priv, RDMA_CM_DESTROYING); mutex_unlock(&id_priv->handler_mutex); - cma_deref_id(id_priv); rdma_destroy_id(&id_priv->id); return; } out: mutex_unlock(&id_priv->handler_mutex); - cma_deref_id(id_priv); } static int cma_resolve_loopback(struct rdma_id_private *id_priv) @@ -2983,7 +2981,6 @@ int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, return -EINVAL; memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); - atomic_inc(&id_priv->refcount); if (cma_any_addr(dst_addr)) { ret = cma_resolve_loopback(id_priv); } else { @@ -3001,7 +2998,6 @@ int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, return 0; err: cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, RDMA_CM_ADDR_BOUND); - cma_deref_id(id_priv); return ret; } EXPORT_SYMBOL(rdma_resolve_addr); |