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authorLeon Romanovsky <leonro@mellanox.com>2019-02-03 14:55:50 +0200
committerJason Gunthorpe <jgg@mellanox.com>2019-02-08 16:50:58 -0700
commit30471d4b20335d9bd9ae9b2382a1e1e97d18d86d (patch)
treee467a16ce8529808d9bb36acaec3c52c2c5ba82e /include
parentc66f67414c1f88554485bb2a0abf8b5c0d741de7 (diff)
RDMA/core: Share driver structure size with core
Add new macros to be used in drivers while registering ops structure and IB/core while calling allocation routines, so drivers won't need to perform kzalloc/kfree in their paths. The change in allocation stage allows us to initialize common fields prior to calling to drivers (e.g. restrack). Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'include')
-rw-r--r--include/rdma/ib_verbs.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 2e1f1e885ee5..e29eae4aec84 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2264,6 +2264,19 @@ struct ib_counters_read_attr {
struct uverbs_attr_bundle;
+#define INIT_RDMA_OBJ_SIZE(ib_struct, drv_struct, member) \
+ .size_##ib_struct = \
+ (sizeof(struct drv_struct) + \
+ BUILD_BUG_ON_ZERO(offsetof(struct drv_struct, member)) + \
+ BUILD_BUG_ON_ZERO( \
+ !__same_type(((struct drv_struct *)NULL)->member, \
+ struct ib_struct)))
+
+#define rdma_zalloc_drv_obj(ib_dev, ib_type) \
+ ((struct ib_type *)kzalloc(ib_dev->ops.size_##ib_type, GFP_KERNEL))
+
+#define DECLARE_RDMA_OBJ_SIZE(ib_struct) size_t size_##ib_struct
+
/**
* struct ib_device_ops - InfiniBand device operations
* This structure defines all the InfiniBand device operations, providers will