Merge commit 'v3.17' into next

1 files changed, 18 insertions, 0 deletions

diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c
index 55046ecd083..bc1b83cb830 100644
--- a/net/ipv4/tcp_offload.c
+++ b/net/ipv4/tcp_offload.c
@@ -14,6 +14,21 @@
 #include <net/tcp.h>
 #include <net/protocol.h>
 
+static void tcp_gso_tstamp(struct sk_buff *skb, unsigned int ts_seq,
+			   unsigned int seq, unsigned int mss)
+{
+	while (skb) {
+		if (before(ts_seq, seq + mss)) {
+			skb_shinfo(skb)->tx_flags |= SKBTX_SW_TSTAMP;
+			skb_shinfo(skb)->tskey = ts_seq;
+			return;
+		}
+
+		skb = skb->next;
+		seq += mss;
+	}
+}
+
 struct sk_buff *tcp_gso_segment(struct sk_buff *skb,
 				netdev_features_t features)
 {
@@ -91,6 +106,9 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb,
 	th = tcp_hdr(skb);
 	seq = ntohl(th->seq);
 
+	if (unlikely(skb_shinfo(gso_skb)->tx_flags & SKBTX_SW_TSTAMP))
+		tcp_gso_tstamp(segs, skb_shinfo(gso_skb)->tskey, seq, mss);
+
 	newcheck = ~csum_fold((__force __wsum)((__force u32)th->check +
 					       (__force u32)delta));