---

yaml
---
r: 376105
b: refs/heads/master
c: 6ff50cd
h: refs/heads/master
i:
  376103: a799020
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5c4b274981950049af3330f14ed9e9aa25afb2fb
+refs/heads/master: 6ff50cd55545d922f5c62776fe1feb38a9846168

trunk/net/ipv4/tcp.c

@@ -2887,6 +2887,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
 	unsigned int mss;
 	struct sk_buff *gso_skb = skb;
 	__sum16 newcheck;
+	bool ooo_okay, copy_destructor;
 
 	if (!pskb_may_pull(skb, sizeof(*th)))
 		goto out;
@@ -2927,10 +2928,18 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
 		goto out;
 	}
 
+	copy_destructor = gso_skb->destructor == tcp_wfree;
+	ooo_okay = gso_skb->ooo_okay;
+	/* All segments but the first should have ooo_okay cleared */
+	skb->ooo_okay = 0;
+
 	segs = skb_segment(skb, features);
 	if (IS_ERR(segs))
 		goto out;
 
+	/* Only first segment might have ooo_okay set */
+	segs->ooo_okay = ooo_okay;
+
 	delta = htonl(oldlen + (thlen + mss));
 
 	skb = segs;
@@ -2950,6 +2959,17 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
 						    thlen, skb->csum));
 
 		seq += mss;
+		if (copy_destructor) {
+			skb->destructor = gso_skb->destructor;
+			skb->sk = gso_skb->sk;
+			/* {tcp|sock}_wfree() use exact truesize accounting :
+			 * sum(skb->truesize) MUST be exactly be gso_skb->truesize
+			 * So we account mss bytes of 'true size' for each segment.
+			 * The last segment will contain the remaining.
+			 */
+			skb->truesize = mss;
+			gso_skb->truesize -= mss;
+		}
 		skb = skb->next;
 		th = tcp_hdr(skb);
 
@@ -2962,7 +2982,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
 	 * is freed at TX completion, and not right now when gso_skb
 	 * is freed by GSO engine
 	 */
-	if (gso_skb->destructor == tcp_wfree) {
+	if (copy_destructor) {
 		swap(gso_skb->sk, skb->sk);
 		swap(gso_skb->destructor, skb->destructor);
 		swap(gso_skb->truesize, skb->truesize);