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-rw-r--r--include/net/nexthop.h4
-rw-r--r--net/ipv4/nexthop.c31
2 files changed, 35 insertions, 0 deletions
diff --git a/include/net/nexthop.h b/include/net/nexthop.h
index e019ed9b3dc3..25f1f9a8419b 100644
--- a/include/net/nexthop.h
+++ b/include/net/nexthop.h
@@ -305,4 +305,8 @@ static inline void nexthop_path_fib6_result(struct fib6_result *res, int hash)
res->nh = &nhi->fib6_nh;
}
}
+
+int nexthop_for_each_fib6_nh(struct nexthop *nh,
+ int (*cb)(struct fib6_nh *nh, void *arg),
+ void *arg);
#endif
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index 5e48762b6b5f..49e8adce5b96 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -517,6 +517,37 @@ struct nexthop *nexthop_select_path(struct nexthop *nh, int hash)
}
EXPORT_SYMBOL_GPL(nexthop_select_path);
+int nexthop_for_each_fib6_nh(struct nexthop *nh,
+ int (*cb)(struct fib6_nh *nh, void *arg),
+ void *arg)
+{
+ struct nh_info *nhi;
+ int err;
+
+ if (nh->is_group) {
+ struct nh_group *nhg;
+ int i;
+
+ nhg = rcu_dereference_rtnl(nh->nh_grp);
+ for (i = 0; i < nhg->num_nh; i++) {
+ struct nh_grp_entry *nhge = &nhg->nh_entries[i];
+
+ nhi = rcu_dereference_rtnl(nhge->nh->nh_info);
+ err = cb(&nhi->fib6_nh, arg);
+ if (err)
+ return err;
+ }
+ } else {
+ nhi = rcu_dereference_rtnl(nh->nh_info);
+ err = cb(&nhi->fib6_nh, arg);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(nexthop_for_each_fib6_nh);
+
int fib6_check_nexthop(struct nexthop *nh, struct fib6_config *cfg,
struct netlink_ext_ack *extack)
{