diff options
| author | Matan Barak <matanb@mellanox.com> | 2017-04-04 13:31:46 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-04-05 13:28:04 -0400 |
| commit | cf8966b3477d5e6545393bb4499f2051ea554c62 (patch) | |
| tree | 35603e0915ee4d20c591b4bdcbf7e6afc81f7834 /include/rdma | |
| parent | f48b726920d96dcd1860df06143bdea7d6d7dcc3 (diff) | |
IB/core: Add support for fd objects
The completion channel we use in verbs infrastructure is FD based.
Previously, we had a separate way to manage this object. Since we
strive for a single way to manage any kind of object in this
infrastructure, we conceptually treat all objects as subclasses
of ib_uobject.
This commit adds the necessary mechanism to support FD based objects
like their IDR counterparts. FD objects release need to be synchronized
with context release. We use the cleanup_mutex on the uverbs_file for
that.
Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 6 | ||||
| -rw-r--r-- | include/rdma/uverbs_types.h | 16 |
2 files changed, 22 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 2e8f661c900a..3a8e05894e9b 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1421,6 +1421,12 @@ struct ib_uobject { const struct uverbs_obj_type *type; }; +struct ib_uobject_file { + struct ib_uobject uobj; + /* ufile contains the lock between context release and file close */ + struct ib_uverbs_file *ufile; +}; + struct ib_udata { const void __user *inbuf; void __user *outbuf; diff --git a/include/rdma/uverbs_types.h b/include/rdma/uverbs_types.h index 66368b5a3006..58674290fab0 100644 --- a/include/rdma/uverbs_types.h +++ b/include/rdma/uverbs_types.h @@ -129,6 +129,22 @@ void rdma_alloc_abort_uobject(struct ib_uobject *uobj); int __must_check rdma_remove_commit_uobject(struct ib_uobject *uobj); int rdma_alloc_commit_uobject(struct ib_uobject *uobj); +struct uverbs_obj_fd_type { + /* + * In fd based objects, uverbs_obj_type_ops points to generic + * fd operations. In order to specialize the underlying types (e.g. + * completion_channel), we use fops, name and flags for fd creation. + * context_closed is called when the context is closed either when + * the driver is removed or the process terminated. + */ + struct uverbs_obj_type type; + int (*context_closed)(struct ib_uobject_file *uobj_file, + enum rdma_remove_reason why); + const struct file_operations *fops; + const char *name; + int flags; +}; + extern const struct uverbs_obj_type_class uverbs_idr_class; #define UVERBS_BUILD_BUG_ON(cond) (sizeof(char[1 - 2 * !!(cond)]) - \ |