--- /dev/null
+From 9615fe36b31d926f1c5107013b772dc226a6a7ca Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Wed, 7 Jul 2021 21:10:51 -0700
+Subject: skbuff: Fix build with SKB extensions disabled
+
+From: Florian Fainelli <f.fainelli@gmail.com>
+
+commit 9615fe36b31d926f1c5107013b772dc226a6a7ca upstream.
+
+We will fail to build with CONFIG_SKB_EXTENSIONS disabled after
+8550ff8d8c75 ("skbuff: Release nfct refcount on napi stolen or re-used
+skbs") since there is an unconditionally use of skb_ext_find() without
+an appropriate stub. Simply build the code conditionally and properly
+guard against both COFNIG_SKB_EXTENSIONS as well as
+CONFIG_NET_TC_SKB_EXT being disabled.
+
+Fixes: Fixes: 8550ff8d8c75 ("skbuff: Release nfct refcount on napi stolen or re-used skbs")
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Reviewed-by: Roi Dayan <roid@nvidia.com>
+Reviewed-by: Eric Dumazet <edumazet@google.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/core/dev.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -5872,7 +5872,7 @@ static struct list_head *gro_list_prepar
+ maclen);
+
+ diffs |= skb_get_nfct(p) ^ skb_get_nfct(skb);
+-
++#if IS_ENABLED(CONFIG_SKB_EXTENSIONS) && IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
+ if (!diffs) {
+ struct tc_skb_ext *skb_ext = skb_ext_find(skb, TC_SKB_EXT);
+ struct tc_skb_ext *p_ext = skb_ext_find(p, TC_SKB_EXT);
+@@ -5881,6 +5881,7 @@ static struct list_head *gro_list_prepar
+ if (!diffs && unlikely(skb_ext))
+ diffs |= p_ext->chain ^ skb_ext->chain;
+ }
++#endif
+
+ NAPI_GRO_CB(p)->same_flow = !diffs;
+ }