1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/netfilter/nf_conntrack_tcp.h b/include/linux/netfilter/nf_conntrack_tcp.h
index 3066789b972a..b2f384d42611 100644
--- a/include/linux/netfilter/nf_conntrack_tcp.h
+++ b/include/linux/netfilter/nf_conntrack_tcp.h
@@ -35,6 +35,9 @@ enum tcp_conntrack {
 /* Has unacknowledged data */
 #define IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED      0x10
 
+/* The field td_maxack has been set */
+#define IP_CT_TCP_FLAG_MAXACK_SET               0x20
+
 struct nf_ct_tcp_flags {
         __u8 flags;
         __u8 mask;
@@ -46,6 +49,7 @@ struct ip_ct_tcp_state {
         u_int32_t       td_end;         /* max of seq + len */
         u_int32_t       td_maxend;      /* max of ack + max(win, 1) */
         u_int32_t       td_maxwin;      /* max(win) */
+        u_int32_t       td_maxack;      /* max of ack */
         u_int8_t        td_scale;       /* window scale factor */
         u_int8_t        flags;          /* per direction options */
 };