Compilation compatibility with kernel 4.10.

Fixes #70.
Resolves incompatibilities introduced by
 2456e855354415bfaeb7badaa14e11b3e02c8466 and
 613dbd95723aee7abd16860745691b6c7bda20dc for kernel 4.10.

Author: aabc

compat.h

@@ -600,4 +600,29 @@ int in6_pton(const char *src, int srclen,
 # define __GNUC_PREREQ(maj, min) 0
 #endif
 
+/* ktime is not union anymore, since 2456e855354415bfaeb7badaa14e11b3e02c8466 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,10,0)
+# define first_tv64	first.tv64
+# define last_tv64	last.tv64
+#else
+# define first_tv64	first
+# define last_tv64	last
+#endif
+
+/* Offset changes made in 613dbd95723aee7abd16860745691b6c7bda20dc */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28) && LINUX_VERSION_CODE < KERNEL_VERSION(4,10,0)
+static inline u_int8_t xt_family(const struct xt_action_param *par)
+{
+	return par->family;
+}
+static inline const struct net_device *xt_in(const struct xt_action_param *par)
+{
+	return par->in;
+}
+static inline const struct net_device *xt_out(const struct xt_action_param *par)
+{
+	return par->out;
+}
+#endif
+
 #endif /* COMPAT_NETFLOW_H */

ipt_NETFLOW.c

@@ -3863,10 +3863,10 @@ static void netflow_export_stats(void)
 		t.pkts_selected	+= st->pkts_selected;
 		t.pkts_observed	+= st->pkts_observed;
 #endif
-		t.drop.first.tv64 = min_not_zero(t.drop.first.tv64, st->drop.first.tv64);
-		t.drop.last.tv64  = max(t.drop.last.tv64, st->drop.last.tv64);
-		t.lost.first.tv64 = min_not_zero(t.lost.first.tv64, st->lost.first.tv64);
-		t.lost.last.tv64  = max(t.lost.last.tv64, st->lost.last.tv64);
+		t.drop.first_tv64 = min_not_zero(t.drop.first_tv64, st->drop.first_tv64);
+		t.drop.last_tv64  = max(t.drop.last_tv64, st->drop.last_tv64);
+		t.lost.first_tv64 = min_not_zero(t.lost.first_tv64, st->lost.first_tv64);
+		t.lost.last_tv64  = max(t.lost.last_tv64, st->lost.last_tv64);
 	}
 
 	export_stat_st(OTPL_MPSTAT, &t);
@@ -4781,8 +4781,8 @@ static unsigned int netflow_target(
 			   const void *targinfo
 # endif
 #else /* since 2.6.28 */
-# define if_in  par->in
-# define if_out par->out
+# define if_in  xt_in(par)
+# define if_out xt_out(par)
 # if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35)
 			   const struct xt_target_param *par
 # else
@@ -4809,7 +4809,7 @@ static unsigned int netflow_target(
 #ifdef ENABLE_DIRECTION
 	const int hooknum = par->hooknum;
 #endif
-	const int family = par->family;
+	const int family = xt_family(par);
 #endif
 	struct ipt_netflow_tuple tuple;
 	struct ipt_netflow *nf;

ipt_NETFLOW.h

@@ -414,7 +414,7 @@ struct netflow_aggr_p {
 #define NETFLOW_STAT_TS(count)							 \
 	do {									 \
 		ktime_t kts = ktime_get_real();					 \
-		if (!(__get_cpu_var(ipt_netflow_stat)).count.first.tv64)	 \
+		if (!(__get_cpu_var(ipt_netflow_stat)).count.first_tv64)	 \
 			__get_cpu_var(ipt_netflow_stat).count.first = kts;	 \
 		__get_cpu_var(ipt_netflow_stat).count.last = kts;		 \
 	} while (0);