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-rw-r--r--include/net/netns/generic.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/include/net/netns/generic.h b/include/net/netns/generic.h
index 0c04fd2a700b..ff4982ab84b6 100644
--- a/include/net/netns/generic.h
+++ b/include/net/netns/generic.h
@@ -12,9 +12,11 @@
* stuff on the struct net without explicit struct net modification
*
* The rules are simple:
- * 1. register the ops with register_pernet_gen_device to get the id
- * of your private pointer;
- * 2. call net_assign_generic() to put the private data on the struct
+ * 1. set pernet_operations->id. After register_pernet_device you
+ * will have the id of your private pointer.
+ * 2. Either set pernet_operations->size (to have the code allocate and
+ * free a private structure pointed to from struct net ) or
+ * call net_assign_generic() to put the private data on the struct
* net (most preferably this should be done in the ->init callback
* of the ops registered);
* 3. do not change this pointer while the net is alive;