netdev - [RFC Patch v5 1/5] net: introduce skb_rbtree_walk

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Date:   Wed,  1 Jun 2022 21:10:24 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     netdev@...r.kernel.org
Cc:     bpf@...r.kernel.org, Cong Wang <cong.wang@...edance.com>
Subject: [RFC Patch v5 1/5] net: introduce skb_rbtree_walk_safe()

From: Cong Wang <cong.wang@...edance.com>

Signed-off-by: Cong Wang <cong.wang@...edance.com>
---
 include/linux/skbuff.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index da96f0d3e753..857fd813c1bc 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3929,6 +3929,11 @@ static inline int __skb_grow_rcsum(struct sk_buff *skb, unsigned int len)
 		for (skb = skb_rb_first(root); skb != NULL;			\
 		     skb = skb_rb_next(skb))
 
+#define skb_rbtree_walk_safe(skb, tmp, root)					\
+		for (skb = skb_rb_first(root);					\
+		     tmp = skb ? skb_rb_next(skb) : NULL, (skb != NULL);	\
+		     skb = tmp)
+
 #define skb_rbtree_walk_from(skb)						\
 		for (; skb != NULL;						\
 		     skb = skb_rb_next(skb))
-- 
2.34.1