1 files changed, 26 insertions, 12 deletions

diff --git a/net/ipv6/tcpv6_offload.c b/net/ipv6/tcpv6_offload.c
index 23971903e66d..effeba58630b 100644
--- a/net/ipv6/tcpv6_offload.c
+++ b/net/ipv6/tcpv6_offload.c
@@ -35,14 +35,13 @@ static void tcp6_check_fraglist_gro(struct list_head *head, struct sk_buff *skb,
 
 	inet6_get_iif_sdif(skb, &iif, &sdif);
 	hdr = skb_gro_network_header(skb);
-	net = dev_net(skb->dev);
-	sk = __inet6_lookup_established(net, net->ipv4.tcp_death_row.hashinfo,
-					&hdr->saddr, th->source,
+	net = dev_net_rcu(skb->dev);
+	sk = __inet6_lookup_established(net, &hdr->saddr, th->source,
 					&hdr->daddr, ntohs(th->dest),
 					iif, sdif);
 	NAPI_GRO_CB(skb)->is_flist = !sk;
 	if (sk)
-		sock_put(sk);
+		sock_gen_put(sk);
 #endif /* IS_ENABLED(CONFIG_IPV6) */
 }
 
@@ -94,14 +93,23 @@ INDIRECT_CALLABLE_SCOPE int tcp6_gro_complete(struct sk_buff *skb, int thoff)
 }
 
 static void __tcpv6_gso_segment_csum(struct sk_buff *seg,
+				     struct in6_addr *oldip,
+				     const struct in6_addr *newip,
 				     __be16 *oldport, __be16 newport)
 {
-	struct tcphdr *th;
+	struct tcphdr *th = tcp_hdr(seg);
+
+	if (!ipv6_addr_equal(oldip, newip)) {
+		inet_proto_csum_replace16(&th->check, seg,
+					  oldip->s6_addr32,
+					  newip->s6_addr32,
+					  true);
+		*oldip = *newip;
+	}
 
 	if (*oldport == newport)
 		return;
 
-	th = tcp_hdr(seg);
 	inet_proto_csum_replace2(&th->check, seg, *oldport, newport, false);
 	*oldport = newport;
 }
@@ -129,10 +137,10 @@ static struct sk_buff *__tcpv6_gso_segment_list_csum(struct sk_buff *segs)
 		th2 = tcp_hdr(seg);
 		iph2 = ipv6_hdr(seg);
 
-		iph2->saddr = iph->saddr;
-		iph2->daddr = iph->daddr;
-		__tcpv6_gso_segment_csum(seg, &th2->source, th->source);
-		__tcpv6_gso_segment_csum(seg, &th2->dest, th->dest);
+		__tcpv6_gso_segment_csum(seg, &iph2->saddr, &iph->saddr,
+					 &th2->source, th->source);
+		__tcpv6_gso_segment_csum(seg, &iph2->daddr, &iph->daddr,
+					 &th2->dest, th->dest);
 	}
 
 	return segs;
@@ -159,8 +167,14 @@ static struct sk_buff *tcp6_gso_segment(struct sk_buff *skb,
 	if (!pskb_may_pull(skb, sizeof(*th)))
 		return ERR_PTR(-EINVAL);
 
-	if (skb_shinfo(skb)->gso_type & SKB_GSO_FRAGLIST)
-		return __tcp6_gso_segment_list(skb, features);
+	if (skb_shinfo(skb)->gso_type & SKB_GSO_FRAGLIST) {
+		struct tcphdr *th = tcp_hdr(skb);
+
+		if (skb_pagelen(skb) - th->doff * 4 == skb_shinfo(skb)->gso_size)
+			return __tcp6_gso_segment_list(skb, features);
+
+		skb->ip_summed = CHECKSUM_NONE;
+	}
 
 	if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
 		const struct ipv6hdr *ipv6h = ipv6_hdr(skb);