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authorJason Gunthorpe <jgunthorpe@obsidianresearch.com>2017-08-14 14:57:39 -0600
committerDoug Ledford <dledford@redhat.com>2017-08-22 17:04:22 -0400
commite3bf14bdc17a8e917f337760cc7cacf3232d7dbc (patch)
treed3cadc75b4c94b80f41118358053541e97f2ed86 /include
parent1eb5be0ec79a7b21cd6b5b73d9de294dc1809e0f (diff)
rdma: Autoload netlink client modules
If a message comes in and we do not have the client in the table, then try to load the module supplying that client using MODULE_ALIAS to find it. This duplicates the scheme seen in other netlink muxes (eg nfnetlink). Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/rdma/rdma_netlink.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/rdma/rdma_netlink.h b/include/rdma/rdma_netlink.h
index e25bf1988846..2d878596b1e0 100644
--- a/include/rdma/rdma_netlink.h
+++ b/include/rdma/rdma_netlink.h
@@ -17,6 +17,18 @@ enum rdma_nl_flags {
RDMA_NL_ADMIN_PERM = 1 << 0,
};
+/* Define this module as providing netlink services for NETLINK_RDMA, with
+ * index _index. Since the client indexes were setup in a uapi header as an
+ * enum and we do no want to change that, the user must supply the expanded
+ * constant as well and the compiler checks they are the same.
+ */
+#define MODULE_ALIAS_RDMA_NETLINK(_index, _val) \
+ static inline void __chk_##_index(void) \
+ { \
+ BUILD_BUG_ON(_index != _val); \
+ } \
+ MODULE_ALIAS("rdma-netlink-subsys-" __stringify(_val))
+
/**
* Register client in RDMA netlink.
* @index: Index of the added client

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