5 files changed, 47 insertions, 5 deletions

diff --git a/include/net/flow.h b/include/net/flow.h
index 78113daadd63..a09447749e2d 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -7,6 +7,7 @@
 #ifndef _NET_FLOW_H
 #define _NET_FLOW_H
 
+#include <linux/socket.h>
 #include <linux/in6.h>
 #include <linux/atomic.h>
 
@@ -68,7 +69,7 @@ struct flowi4 {
 #define fl4_ipsec_spi		uli.spi
 #define fl4_mh_type		uli.mht.type
 #define fl4_gre_key		uli.gre_key
-};
+} __attribute__((__aligned__(BITS_PER_LONG/8)));
 
 static inline void flowi4_init_output(struct flowi4 *fl4, int oif,
 				      __u32 mark, __u8 tos, __u8 scope,
@@ -112,7 +113,7 @@ struct flowi6 {
 #define fl6_ipsec_spi		uli.spi
 #define fl6_mh_type		uli.mht.type
 #define fl6_gre_key		uli.gre_key
-};
+} __attribute__((__aligned__(BITS_PER_LONG/8)));
 
 struct flowidn {
 	struct flowi_common	__fl_common;
@@ -127,7 +128,7 @@ struct flowidn {
 	union flowi_uli		uli;
 #define fld_sport		uli.ports.sport
 #define fld_dport		uli.ports.dport
-};
+} __attribute__((__aligned__(BITS_PER_LONG/8)));
 
 struct flowi {
 	union {
@@ -161,6 +162,24 @@ static inline struct flowi *flowidn_to_flowi(struct flowidn *fldn)
 	return container_of(fldn, struct flowi, u.dn);
 }
 
+typedef unsigned long flow_compare_t;
+
+static inline size_t flow_key_size(u16 family)
+{
+	switch (family) {
+	case AF_INET:
+		BUILD_BUG_ON(sizeof(struct flowi4) % sizeof(flow_compare_t));
+		return sizeof(struct flowi4) / sizeof(flow_compare_t);
+	case AF_INET6:
+		BUILD_BUG_ON(sizeof(struct flowi6) % sizeof(flow_compare_t));
+		return sizeof(struct flowi6) / sizeof(flow_compare_t);
+	case AF_DECnet:
+		BUILD_BUG_ON(sizeof(struct flowidn) % sizeof(flow_compare_t));
+		return sizeof(struct flowidn) / sizeof(flow_compare_t);
+	}
+	return 0;
+}
+
 #define FLOW_DIR_IN	0
 #define FLOW_DIR_OUT	1
 #define FLOW_DIR_FWD	2
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index 99e6e19b57c2..4c0766e201e3 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -96,7 +96,8 @@ extern int sysctl_max_syn_backlog;
  */
 struct listen_sock {
 	u8			max_qlen_log;
-	/* 3 bytes hole, try to use */
+	u8			synflood_warned;
+	/* 2 bytes hole, try to use */
 	int			qlen;
 	int			qlen_young;
 	int			clock_hand;
diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h
index 6506458ccd33..712b3bebeda7 100644
--- a/include/net/sctp/command.h
+++ b/include/net/sctp/command.h
@@ -109,6 +109,7 @@ typedef enum {
 	SCTP_CMD_SEND_MSG,	 /* Send the whole use message */
 	SCTP_CMD_SEND_NEXT_ASCONF, /* Send the next ASCONF after ACK */
 	SCTP_CMD_PURGE_ASCONF_QUEUE, /* Purge all asconf queues.*/
+	SCTP_CMD_SET_ASOC,	 /* Restore association context */
 	SCTP_CMD_LAST
 } sctp_verb_t;
 
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 149a415d1e0a..acc620a4a45f 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -431,17 +431,34 @@ extern int tcp_disconnect(struct sock *sk, int flags);
 extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS];
 extern struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb, 
 				    struct ip_options *opt);
+#ifdef CONFIG_SYN_COOKIES
 extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, 
 				     __u16 *mss);
+#else
+static inline __u32 cookie_v4_init_sequence(struct sock *sk,
+					    struct sk_buff *skb,
+					    __u16 *mss)
+{
+	return 0;
+}
+#endif
 
 extern __u32 cookie_init_timestamp(struct request_sock *req);
 extern bool cookie_check_timestamp(struct tcp_options_received *opt, bool *);
 
 /* From net/ipv6/syncookies.c */
 extern struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb);
+#ifdef CONFIG_SYN_COOKIES
 extern __u32 cookie_v6_init_sequence(struct sock *sk, struct sk_buff *skb,
 				     __u16 *mss);
-
+#else
+static inline __u32 cookie_v6_init_sequence(struct sock *sk,
+					    struct sk_buff *skb,
+					    __u16 *mss)
+{
+	return 0;
+}
+#endif
 /* tcp_output.c */
 
 extern void __tcp_push_pending_frames(struct sock *sk, unsigned int cur_mss,
@@ -460,6 +477,9 @@ extern int tcp_write_wakeup(struct sock *);
 extern void tcp_send_fin(struct sock *sk);
 extern void tcp_send_active_reset(struct sock *sk, gfp_t priority);
 extern int tcp_send_synack(struct sock *);
+extern int tcp_syn_flood_action(struct sock *sk,
+				const struct sk_buff *skb,
+				const char *proto);
 extern void tcp_push_one(struct sock *, unsigned int mss_now);
 extern void tcp_send_ack(struct sock *sk);
 extern void tcp_send_delayed_ack(struct sock *sk);
diff --git a/include/net/transp_v6.h b/include/net/transp_v6.h
index 5271a741c3a3..498433dd067d 100644
--- a/include/net/transp_v6.h
+++ b/include/net/transp_v6.h
@@ -39,6 +39,7 @@ extern int			datagram_recv_ctl(struct sock *sk,
 						  struct sk_buff *skb);
 
 extern int			datagram_send_ctl(struct net *net,
+						  struct sock *sk,
 						  struct msghdr *msg,
 						  struct flowi6 *fl6,
 						  struct ipv6_txoptions *opt,