[PATCH] genl: ctrl: print op -> policy idx mapping

[Johannes Berg]

Newer kernels can dump per-op policies, so print out the new
mapping attribute to indicate which op has which policy.

Signed-off-by: Johannes Berg <johan...@sipsolutions.net>
---
 genl/ctrl.c                    | 10 ++++++++++
 include/uapi/linux/genetlink.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/genl/ctrl.c b/genl/ctrl.c
index 68099fe97f1a..c62212b40fa3 100644
--- a/genl/ctrl.c
+++ b/genl/ctrl.c
@@ -162,6 +162,16 @@ static int print_ctrl(struct rtnl_ctrl_data *ctrl,
                __u32 *ma = RTA_DATA(tb[CTRL_ATTR_MAXATTR]);
                fprintf(fp, " max attribs: %d ",*ma);
        }
+       if (tb[CTRL_ATTR_OP_POLICY]) {
+               const struct rtattr *pos;
+
+               rtattr_for_each_nested(pos, tb[CTRL_ATTR_OP_POLICY]) {
+                       __u32 *v = RTA_DATA(pos);
+
+                       fprintf(fp, " op %d has policy %d",
+                               pos->rta_type, *v);
+               }
+       }
        if (tb[CTRL_ATTR_POLICY])
                nl_print_policy(tb[CTRL_ATTR_POLICY], fp);
 
diff --git a/include/uapi/linux/genetlink.h b/include/uapi/linux/genetlink.h
index 7c6c390c48ee..adb59b9fb9a3 100644
--- a/include/uapi/linux/genetlink.h
+++ b/include/uapi/linux/genetlink.h
@@ -64,6 +64,8 @@ enum {
        CTRL_ATTR_OPS,
        CTRL_ATTR_MCAST_GROUPS,
        CTRL_ATTR_POLICY,
+       CTRL_ATTR_OP,
+       CTRL_ATTR_OP_POLICY,
        __CTRL_ATTR_MAX,
 };
 
-- 
2.26.2