--- zzzz-none-000/linux-2.6.39.4/include/net/tcp.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/include/net/tcp.h	2021-11-10 13:38:18.000000000 +0000
@@ -53,6 +53,8 @@
 
 #define MAX_TCP_HEADER	(128 + MAX_HEADER)
 #define MAX_TCP_OPTION_SPACE 40
+#define TCP_MIN_SND_MSS		48
+#define TCP_MIN_GSO_SIZE	(TCP_MIN_SND_MSS - MAX_TCP_OPTION_SPACE)
 
 /* 
  * Never offer a window over 32767 without using window scaling. Some
@@ -240,6 +242,7 @@
 extern int sysctl_tcp_abc;
 extern int sysctl_tcp_mtu_probing;
 extern int sysctl_tcp_base_mss;
+extern int sysctl_tcp_min_snd_mss;
 extern int sysctl_tcp_workaround_signed_windows;
 extern int sysctl_tcp_slow_start_after_idle;
 extern int sysctl_tcp_max_ssthresh;
@@ -996,17 +999,17 @@
 
 static inline int keepalive_intvl_when(const struct tcp_sock *tp)
 {
-	return tp->keepalive_intvl ? : sysctl_tcp_keepalive_intvl;
+	return (int)tp->keepalive_intvl ? : sysctl_tcp_keepalive_intvl;
 }
 
 static inline int keepalive_time_when(const struct tcp_sock *tp)
 {
-	return tp->keepalive_time ? : sysctl_tcp_keepalive_time;
+	return (int)tp->keepalive_time ? : sysctl_tcp_keepalive_time;
 }
 
 static inline int keepalive_probes(const struct tcp_sock *tp)
 {
-	return tp->keepalive_probes ? : sysctl_tcp_keepalive_probes;
+	return (int)tp->keepalive_probes ? : sysctl_tcp_keepalive_probes;
 }
 
 static inline u32 keepalive_time_elapsed(const struct tcp_sock *tp)