19 files changed, 128 insertions, 52 deletions

diff --git a/include/linux/arcdevice.h b/include/linux/arcdevice.h
index cd4bcb6989ce..7d650a0e3d8f 100644
--- a/include/linux/arcdevice.h
+++ b/include/linux/arcdevice.h
@@ -337,7 +337,8 @@ struct net_device *alloc_arcdev(const char *name);
 
 int arcnet_open(struct net_device *dev);
 int arcnet_close(struct net_device *dev);
-int arcnet_send_packet(struct sk_buff *skb, struct net_device *dev);
+netdev_tx_t arcnet_send_packet(struct sk_buff *skb,
+				     struct net_device *dev);
 void arcnet_timeout(struct net_device *dev);
 
 #endif				/* __KERNEL__ */
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index 7d2e10006188..b7cdbb4373df 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -50,6 +50,8 @@ struct dcbmsg {
  * @DCB_CMD_SNUMTCS: set the number of traffic classes
  * @DCB_CMD_GBCN: set backward congestion notification configuration
  * @DCB_CMD_SBCN: get backward congestion notification configration.
+ * @DCB_CMD_GAPP: get application protocol configuration
+ * @DCB_CMD_SAPP: set application protocol configuration
  */
 enum dcbnl_commands {
 	DCB_CMD_UNDEFINED,
@@ -80,6 +82,9 @@ enum dcbnl_commands {
 	DCB_CMD_BCN_GCFG,
 	DCB_CMD_BCN_SCFG,
 
+	DCB_CMD_GAPP,
+	DCB_CMD_SAPP,
+
 	__DCB_CMD_ENUM_MAX,
 	DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
 };
@@ -114,6 +119,7 @@ enum dcbnl_attrs {
 	DCB_ATTR_CAP,
 	DCB_ATTR_NUMTCS,
 	DCB_ATTR_BCN,
+	DCB_ATTR_APP,
 
 	__DCB_ATTR_ENUM_MAX,
 	DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
@@ -338,5 +344,17 @@ enum dcb_general_attr_values {
 	DCB_ATTR_VALUE_UNDEFINED = 0xff
 };
 
+#define DCB_APP_IDTYPE_ETHTYPE	0x00
+#define DCB_APP_IDTYPE_PORTNUM	0x01
+enum dcbnl_app_attrs {
+	DCB_APP_ATTR_UNDEFINED,
+
+	DCB_APP_ATTR_IDTYPE,
+	DCB_APP_ATTR_ID,
+	DCB_APP_ATTR_PRIORITY,
+
+	__DCB_APP_ATTR_ENUM_MAX,
+	DCB_APP_ATTR_MAX = __DCB_APP_ATTR_ENUM_MAX - 1,
+};
 
 #endif /* __LINUX_DCBNL_H__ */
diff --git a/include/linux/gen_stats.h b/include/linux/gen_stats.h
index 0ffa41df0ee8..710e901085d0 100644
--- a/include/linux/gen_stats.h
+++ b/include/linux/gen_stats.h
@@ -22,6 +22,11 @@ struct gnet_stats_basic
 {
 	__u64	bytes;
 	__u32	packets;
+};
+struct gnet_stats_basic_packed
+{
+	__u64	bytes;
+	__u32	packets;
 } __attribute__ ((packed));
 
 /**
diff --git a/include/linux/hdlc.h b/include/linux/hdlc.h
index 6a6e701f1631..ee275c8b3df1 100644
--- a/include/linux/hdlc.h
+++ b/include/linux/hdlc.h
@@ -38,7 +38,7 @@ struct hdlc_proto {
 	int (*ioctl)(struct net_device *dev, struct ifreq *ifr);
 	__be16 (*type_trans)(struct sk_buff *skb, struct net_device *dev);
 	int (*netif_rx)(struct sk_buff *skb);
-	int (*xmit)(struct sk_buff *skb, struct net_device *dev);
+	netdev_tx_t (*xmit)(struct sk_buff *skb, struct net_device *dev);
 	struct module *module;
 	struct hdlc_proto *next; /* next protocol in the list */
 };
@@ -51,7 +51,7 @@ typedef struct hdlc_device {
 		      unsigned short encoding, unsigned short parity);
 
 	/* hardware driver must handle this instead of dev->hard_start_xmit */
-	int (*xmit)(struct sk_buff *skb, struct net_device *dev);
+	netdev_tx_t (*xmit)(struct sk_buff *skb, struct net_device *dev);
 
 	/* Things below are for HDLC layer internal use only */
 	const struct hdlc_proto *proto;
@@ -60,7 +60,7 @@ typedef struct hdlc_device {
 	spinlock_t state_lock;
 	void *state;
 	void *priv;
-}hdlc_device;
+} hdlc_device;
 
 
 
@@ -106,7 +106,7 @@ void hdlc_close(struct net_device *dev);
 /* May be used by hardware driver */
 int hdlc_change_mtu(struct net_device *dev, int new_mtu);
 /* Must be pointed to by hw driver's dev->netdev_ops->ndo_start_xmit */
-int hdlc_start_xmit(struct sk_buff *skb, struct net_device *dev);
+netdev_tx_t hdlc_start_xmit(struct sk_buff *skb, struct net_device *dev);
 
 int attach_hdlc_protocol(struct net_device *dev, struct hdlc_proto *proto,
 			 size_t size);
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 60d3aac49ed4..121cbad0aae5 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -79,17 +79,19 @@ struct wireless_dev;
 #define net_xmit_eval(e)	((e) == NET_XMIT_CN? 0 : (e))
 #define net_xmit_errno(e)	((e) != NET_XMIT_CN ? -ENOBUFS : 0)
 
+/* Driver transmit return codes */
+enum netdev_tx {
+	NETDEV_TX_OK = 0,	/* driver took care of packet */
+	NETDEV_TX_BUSY,		/* driver tx path was busy*/
+	NETDEV_TX_LOCKED = -1,	/* driver tx lock was already taken */
+};
+typedef enum netdev_tx netdev_tx_t;
+
 #endif
 
 #define MAX_ADDR_LEN	32		/* Largest hardware address length */
 
-/* Driver transmit return codes */
-#define NETDEV_TX_OK 0		/* driver took care of packet */
-#define NETDEV_TX_BUSY 1	/* driver tx path was busy*/
-#define NETDEV_TX_LOCKED -1	/* driver tx lock was already taken */
-
 #ifdef  __KERNEL__
-
 /*
  *	Compute the worst case header length according to the protocols
  *	used.
@@ -507,9 +509,11 @@ struct netdev_queue {
  *     This function is called when network device transistions to the down
  *     state.
  *
- * int (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev);
+ * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
+ *                               struct net_device *dev);
  *	Called when a packet needs to be transmitted.
- *	Must return NETDEV_TX_OK , NETDEV_TX_BUSY, or NETDEV_TX_LOCKED,
+ *	Must return NETDEV_TX_OK , NETDEV_TX_BUSY.
+ *        (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)
  *	Required can not be NULL.
  *
  * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
@@ -580,7 +584,7 @@ struct net_device_ops {
 	void			(*ndo_uninit)(struct net_device *dev);
 	int			(*ndo_open)(struct net_device *dev);
 	int			(*ndo_stop)(struct net_device *dev);
-	int			(*ndo_start_xmit) (struct sk_buff *skb,
+	netdev_tx_t		(*ndo_start_xmit) (struct sk_buff *skb,
 						   struct net_device *dev);
 	u16			(*ndo_select_queue)(struct net_device *dev,
 						    struct sk_buff *skb);
@@ -623,6 +627,8 @@ struct net_device_ops {
 	void                    (*ndo_poll_controller)(struct net_device *dev);
 #endif
 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
+	int			(*ndo_fcoe_enable)(struct net_device *dev);
+	int			(*ndo_fcoe_disable)(struct net_device *dev);
 	int			(*ndo_fcoe_ddp_setup)(struct net_device *dev,
 						      u16 xid,
 						      struct scatterlist *sgl,
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 8afac76cd748..61723a7c21fe 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -233,7 +233,7 @@ struct tcp_request_sock {
 	struct inet_request_sock 	req;
 #ifdef CONFIG_TCP_MD5SIG
 	/* Only used by TCP MD5 Signature so far. */
-	struct tcp_request_sock_ops	*af_specific;
+	const struct tcp_request_sock_ops *af_specific;
 #endif
 	u32			 	rcv_isn;
 	u32			 	snt_isn;
@@ -401,9 +401,9 @@ struct tcp_sock {
 
 #ifdef CONFIG_TCP_MD5SIG
 /* TCP AF-Specific parts; only used by MD5 Signature support so far */
-	struct tcp_sock_af_ops	*af_specific;
+	const struct tcp_sock_af_ops	*af_specific;
 
-/* TCP MD5 Signagure Option information */
+/* TCP MD5 Signature Option information */
 	struct tcp_md5sig_info	*md5sig_info;
 #endif
 };
diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h
index 09514252d84e..bb69e256cd16 100644
--- a/include/linux/usb/usbnet.h
+++ b/include/linux/usb/usbnet.h
@@ -182,7 +182,8 @@ struct skb_data {	/* skb->cb is one of these */
 
 extern int usbnet_open (struct net_device *net);
 extern int usbnet_stop (struct net_device *net);
-extern int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net);
+extern netdev_tx_t usbnet_start_xmit (struct sk_buff *skb,
+				      struct net_device *net);
 extern void usbnet_tx_timeout (struct net_device *net);
 extern int usbnet_change_mtu (struct net_device *net, int new_mtu);
 
diff --git a/include/net/act_api.h b/include/net/act_api.h
index 565eed8fe496..c05fd717c588 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -16,7 +16,7 @@ struct tcf_common {
 	u32				tcfc_capab;
 	int				tcfc_action;
 	struct tcf_t			tcfc_tm;
-	struct gnet_stats_basic		tcfc_bstats;
+	struct gnet_stats_basic_packed	tcfc_bstats;
 	struct gnet_stats_queue		tcfc_qstats;
 	struct gnet_stats_rate_est	tcfc_rate_est;
 	spinlock_t			tcfc_lock;
diff --git a/include/net/arp.h b/include/net/arp.h
index c236270ec95e..716f43c5c98e 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -26,6 +26,6 @@ extern struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip,
 				  const unsigned char *target_hw);
 extern void arp_xmit(struct sk_buff *skb);
 
-extern struct neigh_ops arp_broken_ops;
+extern const struct neigh_ops arp_broken_ops;
 
 #endif	/* _ARP_H */
diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h
index 775cfc8055be..b36ac7e0914d 100644
--- a/include/net/dcbnl.h
+++ b/include/net/dcbnl.h
@@ -48,6 +48,8 @@ struct dcbnl_rtnl_ops {
 	void (*setbcncfg)(struct net_device *, int, u32);
 	void (*getbcnrp)(struct net_device *, int, u8 *);
 	void (*setbcnrp)(struct net_device *, int, u8);
+	u8   (*setapp)(struct net_device *, u8, u16, u8);
+	u8   (*getapp)(struct net_device *, u8, u16);
 };
 
 #endif /* __NET_DCBNL_H__ */
diff --git a/include/net/dst.h b/include/net/dst.h
index 7fc409c19b37..5a900ddcf10d 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -8,6 +8,7 @@
 #ifndef _NET_DST_H
 #define _NET_DST_H
 
+#include <net/dst_ops.h>
 #include <linux/netdevice.h>
 #include <linux/rtnetlink.h>
 #include <linux/rcupdate.h>
@@ -102,28 +103,6 @@ struct dst_entry
 	};
 };
 
-
-struct dst_ops
-{
-	unsigned short		family;
-	__be16			protocol;
-	unsigned		gc_thresh;
-
-	int			(*gc)(struct dst_ops *ops);
-	struct dst_entry *	(*check)(struct dst_entry *, __u32 cookie);
-	void			(*destroy)(struct dst_entry *);
-	void			(*ifdown)(struct dst_entry *,
-					  struct net_device *dev, int how);
-	struct dst_entry *	(*negative_advice)(struct dst_entry *);
-	void			(*link_failure)(struct sk_buff *);
-	void			(*update_pmtu)(struct dst_entry *dst, u32 mtu);
-	int			(*local_out)(struct sk_buff *skb);
-
-	atomic_t		entries;
-	struct kmem_cache 		*kmem_cachep;
-	struct net              *dst_net;
-};
-
 #ifdef __KERNEL__
 
 static inline u32
diff --git a/include/net/dst_ops.h b/include/net/dst_ops.h
new file mode 100644
index 000000000000..d1ff9b7e99b8
--- /dev/null
+++ b/include/net/dst_ops.h
@@ -0,0 +1,28 @@
+#ifndef _NET_DST_OPS_H
+#define _NET_DST_OPS_H
+#include <linux/types.h>
+
+struct dst_entry;
+struct kmem_cachep;
+struct net_device;
+struct sk_buff;
+
+struct dst_ops {
+	unsigned short		family;
+	__be16			protocol;
+	unsigned		gc_thresh;
+
+	int			(*gc)(struct dst_ops *ops);
+	struct dst_entry *	(*check)(struct dst_entry *, __u32 cookie);
+	void			(*destroy)(struct dst_entry *);
+	void			(*ifdown)(struct dst_entry *,
+					  struct net_device *dev, int how);
+	struct dst_entry *	(*negative_advice)(struct dst_entry *);
+	void			(*link_failure)(struct sk_buff *);
+	void			(*update_pmtu)(struct dst_entry *dst, u32 mtu);
+	int			(*local_out)(struct sk_buff *skb);
+
+	atomic_t		entries;
+	struct kmem_cache	*kmem_cachep;
+};
+#endif
diff --git a/include/net/gen_stats.h b/include/net/gen_stats.h
index d136b5240ef2..c1488553e349 100644
--- a/include/net/gen_stats.h
+++ b/include/net/gen_stats.h
@@ -28,7 +28,7 @@ extern int gnet_stats_start_copy_compat(struct sk_buff *skb, int type,
 					spinlock_t *lock, struct gnet_dump *d);
 
 extern int gnet_stats_copy_basic(struct gnet_dump *d,
-				 struct gnet_stats_basic *b);
+				 struct gnet_stats_basic_packed *b);
 extern int gnet_stats_copy_rate_est(struct gnet_dump *d,
 				    struct gnet_stats_rate_est *r);
 extern int gnet_stats_copy_queue(struct gnet_dump *d,
@@ -37,14 +37,14 @@ extern int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);
 
 extern int gnet_stats_finish_copy(struct gnet_dump *d);
 
-extern int gen_new_estimator(struct gnet_stats_basic *bstats,
+extern int gen_new_estimator(struct gnet_stats_basic_packed *bstats,
 			     struct gnet_stats_rate_est *rate_est,
 			     spinlock_t *stats_lock, struct nlattr *opt);
-extern void gen_kill_estimator(struct gnet_stats_basic *bstats,
+extern void gen_kill_estimator(struct gnet_stats_basic_packed *bstats,
 			       struct gnet_stats_rate_est *rate_est);
-extern int gen_replace_estimator(struct gnet_stats_basic *bstats,
+extern int gen_replace_estimator(struct gnet_stats_basic_packed *bstats,
 				 struct gnet_stats_rate_est *rate_est,
 				 spinlock_t *stats_lock, struct nlattr *opt);
-extern bool gen_estimator_active(const struct gnet_stats_basic *bstats,
+extern bool gen_estimator_active(const struct gnet_stats_basic_packed *bstats,
 				 const struct gnet_stats_rate_est *rate_est);
 #endif
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 18b69b6cecaf..3817fda82a80 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -118,7 +118,7 @@ struct neighbour
 	int			(*output)(struct sk_buff *skb);
 	struct sk_buff_head	arp_queue;
 	struct timer_list	timer;
-	struct neigh_ops	*ops;
+	const struct neigh_ops	*ops;
 	u8			primary_key[0];
 };
 
diff --git a/include/net/netfilter/xt_rateest.h b/include/net/netfilter/xt_rateest.h
index 65d594dffbff..ddbf37e19616 100644
--- a/include/net/netfilter/xt_rateest.h
+++ b/include/net/netfilter/xt_rateest.h
@@ -8,7 +8,7 @@ struct xt_rateest {
 	spinlock_t			lock;
 	struct gnet_estimator		params;
 	struct gnet_stats_rate_est	rstats;
-	struct gnet_stats_basic		bstats;
+	struct gnet_stats_basic_packed	bstats;
 };
 
 extern struct xt_rateest *xt_rateest_lookup(const char *name);
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index afab4e4cbac7..dfeb2d7c425b 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -6,6 +6,7 @@
 
 #ifndef __NETNS_IPV6_H__
 #define __NETNS_IPV6_H__
+#include <net/dst_ops.h>
 
 struct ctl_table_header;
 
@@ -42,7 +43,7 @@ struct netns_ipv6 {
 	struct timer_list       ip6_fib_timer;
 	struct hlist_head       *fib_table_hash;
 	struct fib6_table       *fib6_main_tbl;
-	struct dst_ops		*ip6_dst_ops;
+	struct dst_ops		ip6_dst_ops;
 	unsigned int		 ip6_rt_gc_expire;
 	unsigned long		 ip6_rt_last_gc;
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 84b3fc2aef0f..a48a4cc7258b 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -73,7 +73,7 @@ struct Qdisc
 	 */
 	unsigned long		state;
 	struct sk_buff_head	q;
-	struct gnet_stats_basic bstats;
+	struct gnet_stats_basic_packed bstats;
 	struct gnet_stats_queue	qstats;
 };
 
diff --git a/include/net/tcp.h b/include/net/tcp.h
index cbb2a4889fc9..df50bc40b5fd 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -469,6 +469,7 @@ extern void __tcp_push_pending_frames(struct sock *sk, unsigned int cur_mss,
 				      int nonagle);
 extern int tcp_may_send_now(struct sock *sk);
 extern int tcp_retransmit_skb(struct sock *, struct sk_buff *);
+extern void tcp_retransmit_timer(struct sock *sk);
 extern void tcp_xmit_retransmit_queue(struct sock *);
 extern void tcp_simple_retransmit(struct sock *);
 extern int tcp_trim_head(struct sock *, struct sk_buff *, u32);
@@ -521,6 +522,17 @@ extern int tcp_mtu_to_mss(struct sock *sk, int pmtu);
 extern int tcp_mss_to_mtu(struct sock *sk, int mss);
 extern void tcp_mtup_init(struct sock *sk);
 
+static inline void tcp_bound_rto(const struct sock *sk)
+{
+	if (inet_csk(sk)->icsk_rto > TCP_RTO_MAX)
+		inet_csk(sk)->icsk_rto = TCP_RTO_MAX;
+}
+
+static inline u32 __tcp_set_rto(const struct tcp_sock *tp)
+{
+	return (tp->srtt >> 3) + tp->rttvar;
+}
+
 static inline void __tcp_fast_path_on(struct tcp_sock *tp, u32 snd_wnd)
 {
 	tp->pred_flags = htonl((tp->tcp_header_len << 26) |
@@ -1240,6 +1252,29 @@ static inline struct sk_buff *tcp_write_queue_prev(struct sock *sk, struct sk_bu
 #define tcp_for_write_queue_from_safe(skb, tmp, sk)			\
 	skb_queue_walk_from_safe(&(sk)->sk_write_queue, skb, tmp)
 
+/* This function calculates a "timeout" which is equivalent to the timeout of a
+ * TCP connection after "boundary" unsucessful, exponentially backed-off
+ * retransmissions with an initial RTO of TCP_RTO_MIN.
+ */
+static inline bool retransmits_timed_out(const struct sock *sk,
+					 unsigned int boundary)
+{
+	unsigned int timeout, linear_backoff_thresh;
+
+	if (!inet_csk(sk)->icsk_retransmits)
+		return false;
+
+	linear_backoff_thresh = ilog2(TCP_RTO_MAX/TCP_RTO_MIN);
+
+	if (boundary <= linear_backoff_thresh)
+		timeout = ((2 << boundary) - 1) * TCP_RTO_MIN;
+	else
+		timeout = ((2 << linear_backoff_thresh) - 1) * TCP_RTO_MIN +
+			  (boundary - linear_backoff_thresh) * TCP_RTO_MAX;
+
+	return (tcp_time_stamp - tcp_sk(sk)->retrans_stamp) >= timeout;
+}
+
 static inline struct sk_buff *tcp_send_head(struct sock *sk)
 {
 	return sk->sk_send_head;
diff --git a/include/net/transp_v6.h b/include/net/transp_v6.h
index bfb240c6cf79..d65381cad0fc 100644
--- a/include/net/transp_v6.h
+++ b/include/net/transp_v6.h
@@ -51,7 +51,7 @@ extern int			datagram_send_ctl(struct net *net,
 /*
  *	address family specific functions
  */
-extern struct inet_connection_sock_af_ops ipv4_specific;
+extern const struct inet_connection_sock_af_ops ipv4_specific;
 
 extern void inet6_destroy_sock(struct sock *sk);