RDMA: Add netlink infrastructure

Add basic RDMA netlink infrastructure that allows for registration of
RDMA clients for which data is to be exported and supplies message
construction callbacks.

Signed-off-by: Nir Muchtar <nirm@voltaire.com>

[ Reorganize a few things, add CONFIG_NET dependency.  - Roland ]

Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 46a7a3febc12..4007f721d25d 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -38,6 +38,7 @@
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
+#include <rdma/rdma_netlink.h>
 
 #include "core_priv.h"
 
@@ -730,14 +731,23 @@ static int __init ib_core_init(void)
 		goto err;
 	}
 
+	ret = ibnl_init();
+	if (ret) {
+		printk(KERN_WARNING "Couldn't init IB netlink interface\n");
+		goto err_sysfs;
+	}
+
 	ret = ib_cache_setup();
 	if (ret) {
 		printk(KERN_WARNING "Couldn't set up InfiniBand P_Key/GID cache\n");
-		goto err_sysfs;
+		goto err_nl;
 	}
 
 	return 0;
 
+err_nl:
+	ibnl_cleanup();
+
 err_sysfs:
 	ib_sysfs_cleanup();
 
@@ -749,6 +759,7 @@ err:
 static void __exit ib_core_cleanup(void)
 {
 	ib_cache_cleanup();
+	ibnl_cleanup();
 	ib_sysfs_cleanup();
 	/* Make sure that any pending umem accounting work is done. */
 	destroy_workqueue(ib_wq);