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-rw-r--r--include/uapi/linux/nexthop.h3
-rw-r--r--net/ipv4/nexthop.c12
2 files changed, 12 insertions, 3 deletions
diff --git a/include/uapi/linux/nexthop.h b/include/uapi/linux/nexthop.h
index dd8787f9cf39..f4f060a87cc2 100644
--- a/include/uapi/linux/nexthop.h
+++ b/include/uapi/linux/nexthop.h
@@ -33,6 +33,9 @@ enum {
#define NHA_OP_FLAG_DUMP_STATS BIT(0)
#define NHA_OP_FLAG_DUMP_HW_STATS BIT(1)
+/* Response OP_FLAGS. */
+#define NHA_OP_FLAG_RESP_GRP_RESVD_0 BIT(31) /* Dump clears resvd fields. */
+
enum {
NHA_UNSPEC,
NHA_ID, /* u32; id for nexthop. id == 0 means auto-assign */
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index 6b9787ee8601..23caa13bf24d 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -865,7 +865,7 @@ out:
}
static int nla_put_nh_group(struct sk_buff *skb, struct nexthop *nh,
- u32 op_flags)
+ u32 op_flags, u32 *resp_op_flags)
{
struct nh_group *nhg = rtnl_dereference(nh->nh_grp);
struct nexthop_grp *p;
@@ -874,6 +874,8 @@ static int nla_put_nh_group(struct sk_buff *skb, struct nexthop *nh,
u16 group_type = 0;
int i;
+ *resp_op_flags |= NHA_OP_FLAG_RESP_GRP_RESVD_0;
+
if (nhg->hash_threshold)
group_type = NEXTHOP_GRP_TYPE_MPATH;
else if (nhg->resilient)
@@ -934,10 +936,12 @@ static int nh_fill_node(struct sk_buff *skb, struct nexthop *nh,
if (nh->is_group) {
struct nh_group *nhg = rtnl_dereference(nh->nh_grp);
+ u32 resp_op_flags = 0;
if (nhg->fdb_nh && nla_put_flag(skb, NHA_FDB))
goto nla_put_failure;
- if (nla_put_nh_group(skb, nh, op_flags))
+ if (nla_put_nh_group(skb, nh, op_flags, &resp_op_flags) ||
+ nla_put_u32(skb, NHA_OP_FLAGS, resp_op_flags))
goto nla_put_failure;
goto out;
}
@@ -1050,7 +1054,9 @@ static size_t nh_nlmsg_size(struct nexthop *nh)
sz += nla_total_size(4); /* NHA_ID */
if (nh->is_group)
- sz += nh_nlmsg_size_grp(nh);
+ sz += nh_nlmsg_size_grp(nh) +
+ nla_total_size(4) + /* NHA_OP_FLAGS */
+ 0;
else
sz += nh_nlmsg_size_single(nh);