--- zzzz-none-000/linux-3.10.107/net/core/secure_seq.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/core/secure_seq.c	2021-02-04 17:41:59.000000000 +0000
@@ -7,6 +7,7 @@
 #include <linux/hrtimer.h>
 #include <linux/ktime.h>
 #include <linux/string.h>
+#include <linux/net.h>
 
 #include <net/secure_seq.h>
 
@@ -15,20 +16,9 @@
 
 static u32 net_secret[NET_SECRET_SIZE] ____cacheline_aligned;
 
-static void net_secret_init(void)
+static __always_inline void net_secret_init(void)
 {
-	u32 tmp;
-	int i;
-
-	if (likely(net_secret[0]))
-		return;
-
-	for (i = NET_SECRET_SIZE; i > 0;) {
-		do {
-			get_random_bytes(&tmp, sizeof(tmp));
-		} while (!tmp);
-		cmpxchg(&net_secret[--i], 0, tmp);
-	}
+	net_get_random_once(net_secret, sizeof(net_secret));
 }
 #endif
 
@@ -45,7 +35,7 @@
 	 *	overlaps less than one time per MSL (2 minutes).
 	 *	Choosing a clock of 64 ns period is OK. (period of 274 s)
 	 */
-	return seq + (ktime_to_ns(ktime_get_real()) >> 6);
+	return seq + (ktime_get_real_ns() >> 6);
 }
 #endif
 
@@ -56,11 +46,12 @@
 	u32 secret[MD5_MESSAGE_BYTES / 4];
 	u32 hash[MD5_DIGEST_WORDS];
 	u32 i;
+	const struct in6_addr *daddr6 = (struct in6_addr *) daddr;
 
 	net_secret_init();
 	memcpy(hash, saddr, 16);
 	for (i = 0; i < 4; i++)
-		secret[i] = net_secret[i] + (__force u32)daddr[i];
+		secret[i] = net_secret[i] + (__force u32)daddr6->s6_addr32[i];
 	secret[4] = net_secret[4] +
 		(((__force u16)sport << 16) + (__force u16)dport);
 	for (i = 5; i < MD5_MESSAGE_BYTES / 4; i++)
@@ -78,11 +69,12 @@
 	u32 secret[MD5_MESSAGE_BYTES / 4];
 	u32 hash[MD5_DIGEST_WORDS];
 	u32 i;
+	const struct in6_addr *daddr6 = (struct in6_addr *) daddr;
 
 	net_secret_init();
 	memcpy(hash, saddr, 16);
 	for (i = 0; i < 4; i++)
-		secret[i] = net_secret[i] + (__force u32) daddr[i];
+		secret[i] = net_secret[i] + (__force u32) daddr6->s6_addr32[i];
 	secret[4] = net_secret[4] + (__force u32)dport;
 	for (i = 5; i < MD5_MESSAGE_BYTES / 4; i++)
 		secret[i] = net_secret[i];
@@ -145,7 +137,7 @@
 	md5_transform(hash, net_secret);
 
 	seq = hash[0] | (((u64)hash[1]) << 32);
-	seq += ktime_to_ns(ktime_get_real());
+	seq += ktime_get_real_ns();
 	seq &= (1ull << 48) - 1;
 
 	return seq;
@@ -156,6 +148,7 @@
 u64 secure_dccpv6_sequence_number(__be32 *saddr, __be32 *daddr,
 				  __be16 sport, __be16 dport)
 {
+	const struct in6_addr *daddr6 = (struct in6_addr *) daddr;
 	u32 secret[MD5_MESSAGE_BYTES / 4];
 	u32 hash[MD5_DIGEST_WORDS];
 	u64 seq;
@@ -164,7 +157,7 @@
 	net_secret_init();
 	memcpy(hash, saddr, 16);
 	for (i = 0; i < 4; i++)
-		secret[i] = net_secret[i] + daddr[i];
+		secret[i] = net_secret[i] + (__force u32)daddr6->s6_addr32[i];
 	secret[4] = net_secret[4] +
 		(((__force u16)sport << 16) + (__force u16)dport);
 	for (i = 5; i < MD5_MESSAGE_BYTES / 4; i++)
@@ -173,7 +166,7 @@
 	md5_transform(hash, secret);
 
 	seq = hash[0] | (((u64)hash[1]) << 32);
-	seq += ktime_to_ns(ktime_get_real());
+	seq += ktime_get_real_ns();
 	seq &= (1ull << 48) - 1;
 
 	return seq;