Re: [PATCH] net: fix bridge multicast packet checksum validation

On Thu, 18 Feb 2016 15:35:42 -0500 (EST)
David Miller [off-list ref] wrote:

From: Linus Lüssing <redacted>
Date: Mon, 15 Feb 2016 03:07:06 +0100

quoted

@@ -4084,10 +4089,22 @@ struct sk_buff *skb_checksum_trimmed(struct sk_buff *skb,
 	if (!pskb_may_pull(skb_chk, offset))
 		goto err;
 
-	__skb_pull(skb_chk, offset);
+	ip_summed = skb->ip_summed;
+	csum_valid = skb->csum_valid;
+	csum_level = skb->csum_level;
+	csum_bad = skb->csum_bad;
+	csum = skb->csum;
+
+	skb_pull_rcsum(skb_chk, offset);
 	ret = skb_chkf(skb_chk);
 	__skb_push(skb_chk, offset);
 
+	skb->ip_summed = ip_summed;
+	skb->csum_valid = csum_valid;
+	skb->csum_level = csum_level;
+	skb->csum_bad = csum_bad;
+	skb->csum = csum;
+

There really has to be a better way to fix this :-/

Agreed, this is gross.