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-rw-r--r--include/linux/genl_magic_func.h1
-rw-r--r--include/net/genetlink.h3
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h
index 939b1a8f571b..4a4b387181ad 100644
--- a/include/linux/genl_magic_func.h
+++ b/include/linux/genl_magic_func.h
@@ -294,6 +294,7 @@ static struct genl_family ZZZ_genl_family __ro_after_init = {
.ops = ZZZ_genl_ops,
.n_ops = ARRAY_SIZE(ZZZ_genl_ops),
.mcgrps = ZZZ_genl_mcgrps,
+ .resv_start_op = 42, /* drbd is currently the only user */
.n_mcgrps = ARRAY_SIZE(ZZZ_genl_mcgrps),
.module = THIS_MODULE,
};
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index 56a50e1c51b9..a4827b5e1e07 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -39,6 +39,8 @@ struct genl_info;
* undo operations done by pre_doit, for example release locks
* @mcgrps: multicast groups used by this family
* @n_mcgrps: number of multicast groups
+ * @resv_start_op: first operation for which reserved fields of the header
+ * can be validated, new families should leave this field at zero
* @mcgrp_offset: starting number of multicast group IDs in this family
* (private)
* @ops: the operations supported by this family
@@ -58,6 +60,7 @@ struct genl_family {
u8 n_ops;
u8 n_small_ops;
u8 n_mcgrps;
+ u8 resv_start_op;
const struct nla_policy *policy;
int (*pre_doit)(const struct genl_ops *ops,
struct sk_buff *skb,