Remove the locally defined for_each_ip6_tunnel_rcu macro and use
the generic for_each_ip_tunnel_rcu from linux/if_tunnel.h instead.

This eliminates code duplication and ensures consistency across
the kernel tunnel implementations.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
---
 net/ipv6/ip6_tunnel.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 4c29aa94e86e..ace0bb91542f 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -96,9 +96,6 @@ static inline int ip6_tnl_mpls_supported(void)
 	return IS_ENABLED(CONFIG_MPLS);
 }
 
-#define for_each_ip6_tunnel_rcu(start) \
-	for (t = rcu_dereference(start); t; t = rcu_dereference(t->next))
-
 /**
  * ip6_tnl_lookup - fetch tunnel matching the end-point addresses
  *   @net: network namespace
@@ -121,7 +118,7 @@ ip6_tnl_lookup(struct net *net, int link,
 	struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
 	struct in6_addr any;
 
-	for_each_ip6_tunnel_rcu(ip6n->tnls_r_l[hash]) {
+	for_each_ip_tunnel_rcu(t, ip6n->tnls_r_l[hash]) {
 		if (!ipv6_addr_equal(local, &t->parms.laddr) ||
 		    !ipv6_addr_equal(remote, &t->parms.raddr) ||
 		    !(t->dev->flags & IFF_UP))
@@ -135,7 +132,7 @@ ip6_tnl_lookup(struct net *net, int link,
 
 	memset(&any, 0, sizeof(any));
 	hash = HASH(&any, local);
-	for_each_ip6_tunnel_rcu(ip6n->tnls_r_l[hash]) {
+	for_each_ip_tunnel_rcu(t, ip6n->tnls_r_l[hash]) {
 		if (!ipv6_addr_equal(local, &t->parms.laddr) ||
 		    !ipv6_addr_any(&t->parms.raddr) ||
 		    !(t->dev->flags & IFF_UP))
@@ -148,7 +145,7 @@ ip6_tnl_lookup(struct net *net, int link,
 	}
 
 	hash = HASH(remote, &any);
-	for_each_ip6_tunnel_rcu(ip6n->tnls_r_l[hash]) {
+	for_each_ip_tunnel_rcu(t, ip6n->tnls_r_l[hash]) {
 		if (!ipv6_addr_equal(remote, &t->parms.raddr) ||
 		    !ipv6_addr_any(&t->parms.laddr) ||
 		    !(t->dev->flags & IFF_UP))
-- 
2.34.1

On Fri, Apr 03, 2026 at 04:46:19PM +0800, Yue Haibing wrote:
> Remove the locally defined for_each_ip6_tunnel_rcu macro and use
> the generic for_each_ip_tunnel_rcu from linux/if_tunnel.h instead.
> 
> This eliminates code duplication and ensures consistency across
> the kernel tunnel implementations.
> 
> Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
> ---
>  net/ipv6/ip6_tunnel.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)

Reviewed-by: Simon Horman <horms@kernel.org>