1 files changed, 52 insertions, 29 deletions

diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index a6e2aadbb91b..a7421382a916 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -17,6 +17,7 @@ struct ipv6_devconf {
 	__s32		hop_limit;
 	__s32		mtu6;
 	__s32		forwarding;
+	__s32		force_forwarding;
 	__s32		disable_policy;
 	__s32		proxy_ndp;
 	__cacheline_group_end(ipv6_devconf_read_txrx);
@@ -125,6 +126,28 @@ static inline unsigned int ipv6_transport_len(const struct sk_buff *skb)
 	       skb_network_header_len(skb);
 }
 
+static inline unsigned int
+ipv6_payload_len(const struct sk_buff *skb, const struct ipv6hdr *ip6)
+{
+	u32 len = ntohs(ip6->payload_len);
+
+	return (len || !skb_is_gso(skb) || !skb_is_gso_tcp(skb)) ?
+		len :
+		skb->len - skb_network_offset(skb) - sizeof(struct ipv6hdr);
+}
+
+static inline unsigned int skb_ipv6_payload_len(const struct sk_buff *skb)
+{
+	return ipv6_payload_len(skb, ipv6_hdr(skb));
+}
+
+#define IPV6_MAXPLEN		65535
+
+static inline void ipv6_set_payload_len(struct ipv6hdr *ip6, unsigned int len)
+{
+	ip6->payload_len = len <= IPV6_MAXPLEN ? htons(len) : 0;
+}
+
 /* 
    This structure contains results of exthdrs parsing
    as offsets from skb->nh.
@@ -154,8 +177,8 @@ struct inet6_skb_parm {
 #define IP6SKB_L3SLAVE         64
 #define IP6SKB_JUMBOGRAM      128
 #define IP6SKB_SEG6	      256
-#define IP6SKB_FAKEJUMBO      512
 #define IP6SKB_MULTIPATH      1024
+#define IP6SKB_MCROUTE        2048
 };
 
 #if defined(CONFIG_NET_L3_MASTER_DEV)
@@ -203,26 +226,27 @@ struct ipv6_mc_socklist;
 struct ipv6_ac_socklist;
 struct ipv6_fl_socklist;
 
-struct inet6_cork {
-	struct ipv6_txoptions *opt;
-	u8 hop_limit;
-	u8 tclass;
-};
-
 /* struct ipv6_pinfo - ipv6 private area */
 struct ipv6_pinfo {
+	/* Used in tx path (inet6_csk_route_socket(), ip6_xmit()) */
 	struct in6_addr 	saddr;
-	struct in6_pktinfo	sticky_pktinfo;
-	const struct in6_addr		*daddr_cache;
+	union {
+		struct in6_addr daddr;
+		struct in6_addr final;
+	};
+	__be32			flow_label;
+	u32			dst_cookie;
+	struct ipv6_txoptions __rcu	*opt;
+	s16			hop_limit;
+	u8			pmtudisc;
+	u8			tclass;
 #ifdef CONFIG_IPV6_SUBTREES
-	const struct in6_addr		*saddr_cache;
+	bool			saddr_cache;
 #endif
+	bool			daddr_cache;
 
-	__be32			flow_label;
-	__u32			frag_size;
-
-	s16			hop_limit;
 	u8			mcast_hops;
+	u32			frag_size;
 
 	int			ucast_oif;
 	int			mcast_oif;
@@ -230,7 +254,7 @@ struct ipv6_pinfo {
 	/* pktoption flags */
 	union {
 		struct {
-			__u16	srcrt:1,
+			u16	srcrt:1,
 				osrcrt:1,
 			        rxinfo:1,
 			        rxoinfo:1,
@@ -247,29 +271,23 @@ struct ipv6_pinfo {
 				recvfragsize:1;
 				/* 1 bits hole */
 		} bits;
-		__u16		all;
+		u16		all;
 	} rxopt;
 
 	/* sockopt flags */
-	__u8			srcprefs;	/* 001: prefer temporary address
+	u8			srcprefs;	/* 001: prefer temporary address
 						 * 010: prefer public address
 						 * 100: prefer care-of address
 						 */
-	__u8			pmtudisc;
-	__u8			min_hopcount;
-	__u8			tclass;
+	u8			min_hopcount;
 	__be32			rcv_flowinfo;
+	struct in6_pktinfo	sticky_pktinfo;
 
-	__u32			dst_cookie;
+	struct sk_buff		*pktoptions;
+	struct sk_buff		*rxpmtu;
 
 	struct ipv6_mc_socklist	__rcu *ipv6_mc_list;
 	struct ipv6_ac_socklist	*ipv6_ac_list;
-	struct ipv6_fl_socklist __rcu *ipv6_fl_list;
-
-	struct ipv6_txoptions __rcu	*opt;
-	struct sk_buff		*pktoptions;
-	struct sk_buff		*rxpmtu;
-	struct inet6_cork	cork;
 };
 
 /* We currently use available bits from inet_sk(sk)->inet_flags,
@@ -292,7 +310,7 @@ struct raw6_sock {
 	__u32			offset;		/* checksum offset  */
 	struct icmp6_filter	filter;
 	__u32			ip6mr_table;
-
+	struct numa_drop_counters drop_counters;
 	struct ipv6_pinfo	inet6;
 };
 
@@ -315,7 +333,12 @@ struct tcp6_timewait_sock {
 };
 
 #if IS_ENABLED(CONFIG_IPV6)
-bool ipv6_mod_enabled(void);
+extern int disable_ipv6_mod;
+
+static inline bool ipv6_mod_enabled(void)
+{
+	return disable_ipv6_mod == 0;
+}
 
 static inline struct ipv6_pinfo *inet6_sk(const struct sock *__sk)
 {