10 files changed, 81 insertions, 36 deletions

diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h
index 580b6004d00e..005e1525ab86 100644
--- a/include/linux/if_ether.h
+++ b/include/linux/if_ether.h
@@ -136,10 +136,6 @@ extern struct ctl_table ether_table[];
 
 extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
 
-/*
- *      Display a 6 byte device address (MAC) in a readable format.
- */
-extern char *print_mac(char *buf, const unsigned char *addr) __deprecated;
 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
 #define MAC_BUF_SIZE    18
 #define DECLARE_MAC_BUF(var) char var[MAC_BUF_SIZE]
diff --git a/include/linux/isdn_ppp.h b/include/linux/isdn_ppp.h
index 4c218ee7587a..8687a7dc0632 100644
--- a/include/linux/isdn_ppp.h
+++ b/include/linux/isdn_ppp.h
@@ -157,7 +157,7 @@ typedef struct {
 
 typedef struct {
   int mp_mrru;                        /* unused                             */
-  struct sk_buff_head frags;    /* fragments sl list */
+  struct sk_buff * frags;       /* fragments sl list -- use skb->next */
   long frames;                  /* number of frames in the frame list */
   unsigned int seq;             /* last processed packet seq #: any packets
                                  * with smaller seq # will be dropped
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 083b5989cecb..97873e31661c 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -63,30 +63,69 @@ struct wireless_dev;
 #define HAVE_FREE_NETDEV                /* free_netdev() */
 #define HAVE_NETDEV_PRIV                /* netdev_priv() */
 
-#define NET_XMIT_SUCCESS        0
-#define NET_XMIT_DROP           1       /* skb dropped                  */
-#define NET_XMIT_CN             2       /* congestion notification      */
-#define NET_XMIT_POLICED        3       /* skb is shot by police        */
-#define NET_XMIT_MASK           0xFFFF  /* qdisc flags in net/sch_generic.h */
-
 /* Backlog congestion levels */
-#define NET_RX_SUCCESS          0   /* keep 'em coming, baby */
-#define NET_RX_DROP             1  /* packet dropped */
+#define NET_RX_SUCCESS          0       /* keep 'em coming, baby */
+#define NET_RX_DROP             1       /* packet dropped */
+
+/*
+ * Transmit return codes: transmit return codes originate from three different
+ * namespaces:
+ *
+ * - qdisc return codes
+ * - driver transmit return codes
+ * - errno values
+ *
+ * Drivers are allowed to return any one of those in their hard_start_xmit()
+ * function. Real network devices commonly used with qdiscs should only return
+ * the driver transmit return codes though - when qdiscs are used, the actual
+ * transmission happens asynchronously, so the value is not propagated to
+ * higher layers. Virtual network devices transmit synchronously, in this case
+ * the driver transmit return codes are consumed by dev_queue_xmit(), all
+ * others are propagated to higher layers.
+ */
+
+/* qdisc ->enqueue() return codes. */
+#define NET_XMIT_SUCCESS        0x00
+#define NET_XMIT_DROP           0x01    /* skb dropped                  */
+#define NET_XMIT_CN             0x02    /* congestion notification      */
+#define NET_XMIT_POLICED        0x03    /* skb is shot by police        */
+#define NET_XMIT_MASK           0x0f    /* qdisc flags in net/sch_generic.h */
 
 /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
  * indicates that the device will soon be dropping packets, or already drops
  * some packets of the same priority; prompting us to send less aggressively. */
-#define net_xmit_eval(e)        ((e) == NET_XMIT_CN? 0 : (e))
+#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 */
+#define NETDEV_TX_MASK          0xf0
+
 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 */
+        __NETDEV_TX_MIN  = INT_MIN,     /* make sure enum is signed */
+        NETDEV_TX_OK     = 0x00,        /* driver took care of packet */
+        NETDEV_TX_BUSY   = 0x10,        /* driver tx path was busy*/
+        NETDEV_TX_LOCKED = 0x20,        /* driver tx lock was already taken */
 };
 typedef enum netdev_tx netdev_tx_t;
 
+/*
+ * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant;
+ * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed.
+ */
+static inline bool dev_xmit_complete(int rc)
+{
+        /*
+         * Positive cases with an skb consumed by a driver:
+         * - successful transmission (rc == NETDEV_TX_OK)
+         * - error while transmitting (rc < 0)
+         * - error while queueing to a different device (rc & NET_XMIT_MASK)
+         */
+        if (likely(rc < NET_XMIT_MASK))
+                return true;
+
+        return false;
+}
+
 #endif
 
 #define MAX_ADDR_LEN    32              /* Largest hardware address length */
@@ -857,7 +896,7 @@ struct net_device {
         /* device index hash chain */
         struct hlist_node       index_hlist;
 
-        struct net_device       *link_watch_next;
+        struct list_head        link_watch_list;
 
         /* register/unregister state machine */
         enum { NETREG_UNINITIALIZED=0,
@@ -1093,6 +1132,16 @@ static inline struct net_device *next_net_device(struct net_device *dev)
         return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
 }
 
+static inline struct net_device *next_net_device_rcu(struct net_device *dev)
+{
+        struct list_head *lh;
+        struct net *net;
+
+        net = dev_net(dev);
+        lh = rcu_dereference(dev->dev_list.next);
+        return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
+}
+
 static inline struct net_device *first_net_device(struct net *net)
 {
         return list_empty(&net->dev_base_head) ? NULL :
@@ -1551,6 +1600,7 @@ static inline void dev_hold(struct net_device *dev)
  */
 
 extern void linkwatch_fire_event(struct net_device *dev);
+extern void linkwatch_forget_dev(struct net_device *dev);
 
 /**
  *      netif_carrier_ok - test if carrier present
@@ -1892,6 +1942,7 @@ extern void		netdev_features_change(struct net_device *dev);
 extern void             dev_load(struct net *net, const char *name);
 extern void             dev_mcast_init(void);
 extern const struct net_device_stats *dev_get_stats(struct net_device *dev);
+extern void             dev_txq_stats_fold(const struct net_device *dev, struct net_device_stats *stats);
 
 extern int              netdev_max_backlog;
 extern int              weight_p;
diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index 29714b8441b1..b0c3671d463c 100644
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -202,6 +202,7 @@ static inline int notifier_to_errno(int ret)
 #define NETDEV_BONDING_OLDTYPE  0x000E
 #define NETDEV_BONDING_NEWTYPE  0x000F
 #define NETDEV_POST_INIT        0x0010
+#define NETDEV_UNREGISTER_PERNET 0x0011
 
 #define SYS_DOWN        0x0001  /* Notify of system down */
 #define SYS_RESTART     SYS_DOWN
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index eeecb8547a2a..32d7d77b4a01 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -81,6 +81,12 @@ enum {
         TCP_DATA_OFFSET = __cpu_to_be32(0xF0000000)
 }; 
 
+/*
+ * TCP general constants
+ */
+#define TCP_MSS_DEFAULT          536U   /* IPv4 (RFC1122, RFC2581) */
+#define TCP_MSS_DESIRED         1220U   /* IPv6 (tunneled), EDNS0 (RFC3226) */
+
 /* TCP socket options */
 #define TCP_NODELAY             1       /* Turn off Nagle's algorithm. */
 #define TCP_MAXSEG              2       /* Limit MSS */
diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h
index 5b698b3b463d..41cbddd25b70 100644
--- a/include/net/inet_hashtables.h
+++ b/include/net/inet_hashtables.h
@@ -92,8 +92,8 @@ static inline struct net *ib_net(struct inet_bind_bucket *ib)
         return read_pnet(&ib->ib_net);
 }
 
-#define inet_bind_bucket_for_each(tb, node, head) \
-        hlist_for_each_entry(tb, node, head, node)
+#define inet_bind_bucket_for_each(tb, pos, head) \
+        hlist_for_each_entry(tb, pos, head, node)
 
 struct inet_bind_hashbucket {
         spinlock_t              lock;
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 35ad7b930467..87b1df0d4d8c 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -17,15 +17,15 @@ struct inet_peer {
         /* group together avl_left,avl_right,v4daddr to speedup lookups */
         struct inet_peer        *avl_left, *avl_right;
         __be32                  v4daddr;        /* peer's address */
-        __u16                   avl_height;
-        __u16                   ip_id_count;    /* IP ID for the next packet */
+        __u32                   avl_height;
         struct list_head        unused;
         __u32                   dtime;          /* the time of last use of not
                                                  * referenced entries */
         atomic_t                refcnt;
         atomic_t                rid;            /* Frag reception counter */
+        atomic_t                ip_id_count;    /* IP ID for the next packet */
         __u32                   tcp_ts;
-        unsigned long           tcp_ts_stamp;
+        __u32                   tcp_ts_stamp;
 };
 
 void                    inet_initpeers(void) __init;
@@ -36,17 +36,11 @@ struct inet_peer	*inet_getpeer(__be32 daddr, int create);
 /* can be called from BH context or outside */
 extern void inet_putpeer(struct inet_peer *p);
 
-extern spinlock_t inet_peer_idlock;
 /* can be called with or without local BH being disabled */
 static inline __u16     inet_getid(struct inet_peer *p, int more)
 {
-        __u16 id;
-
-        spin_lock_bh(&inet_peer_idlock);
-        id = p->ip_id_count;
-        p->ip_id_count += 1 + more;
-        spin_unlock_bh(&inet_peer_idlock);
-        return id;
+        more++;
+        return atomic_add_return(more, &p->ip_id_count) - more;
 }
 
 #endif /* _NET_INETPEER_H */
diff --git a/include/net/phonet/pn_dev.h b/include/net/phonet/pn_dev.h
index afa7defceb14..d7b989ca3d63 100644
--- a/include/net/phonet/pn_dev.h
+++ b/include/net/phonet/pn_dev.h
@@ -25,7 +25,7 @@
 
 struct phonet_device_list {
         struct list_head list;
-        spinlock_t lock;
+        struct mutex lock;
 };
 
 struct phonet_device_list *phonet_device_list(struct net *net);
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 6e5f0e0c7967..cd2e18778f81 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -1980,7 +1980,7 @@ void sctp_assoc_set_primary(struct sctp_association *,
 void sctp_assoc_del_nonprimary_peers(struct sctp_association *,
                                     struct sctp_transport *);
 int sctp_assoc_set_bind_addr_from_ep(struct sctp_association *,
-                                     gfp_t);
+                                     sctp_scope_t, gfp_t);
 int sctp_assoc_set_bind_addr_from_cookie(struct sctp_association *,
                                          struct sctp_cookie*,
                                          gfp_t gfp);
diff --git a/include/net/tcp.h b/include/net/tcp.h
index bf20f88fd033..325bfcf5c934 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -62,9 +62,6 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
 /* Minimal accepted MSS. It is (60+60+8) - (20+20). */
 #define TCP_MIN_MSS             88U
 
-/* Minimal RCV_MSS. */
-#define TCP_MIN_RCVMSS          536U
-
 /* The least MTU to use for probing */
 #define TCP_BASE_MSS            512