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Diffstat (limited to 'net/ipv4/tcp_offload.c')
-rw-r--r--net/ipv4/tcp_offload.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c
index 55046ecd083e..f597119fc4e7 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>
+void tcp_gso_tstamp(struct sk_buff *skb, unsigned int ts_seq, unsigned int seq,
+ unsigned int mss)
+{
+ while (skb) {
+ if (ts_seq < (__u64) 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));