[SOCK]: Introduce sk_receive_skb
[powerpc.git] / net / core / dev.c
index faf59b0..a5efc9a 100644 (file)
@@ -267,10 +267,6 @@ void dev_add_pack(struct packet_type *pt)
        spin_unlock_bh(&ptype_lock);
 }
 
-extern void linkwatch_run_queue(void);
-
-
-
 /**
  *     __dev_remove_pack        - remove packet handler
  *     @pt: packet type declaration
@@ -578,6 +574,8 @@ struct net_device *dev_getbyhwaddr(unsigned short type, char *ha)
        return dev;
 }
 
+EXPORT_SYMBOL(dev_getbyhwaddr);
+
 struct net_device *dev_getfirstbyhwtype(unsigned short type)
 {
        struct net_device *dev;
@@ -1009,13 +1007,22 @@ void net_disable_timestamp(void)
        atomic_dec(&netstamp_needed);
 }
 
-static inline void net_timestamp(struct timeval *stamp)
+void __net_timestamp(struct sk_buff *skb)
+{
+       struct timeval tv;
+
+       do_gettimeofday(&tv);
+       skb_set_timestamp(skb, &tv);
+}
+EXPORT_SYMBOL(__net_timestamp);
+
+static inline void net_timestamp(struct sk_buff *skb)
 {
        if (atomic_read(&netstamp_needed))
-               do_gettimeofday(stamp);
+               __net_timestamp(skb);
        else {
-               stamp->tv_sec = 0;
-               stamp->tv_usec = 0;
+               skb->tstamp.off_sec = 0;
+               skb->tstamp.off_usec = 0;
        }
 }
 
@@ -1027,7 +1034,8 @@ static inline void net_timestamp(struct timeval *stamp)
 void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
 {
        struct packet_type *ptype;
-       net_timestamp(&skb->stamp);
+
+       net_timestamp(skb);
 
        rcu_read_lock();
        list_for_each_entry_rcu(ptype, &ptype_all, list) {
@@ -1058,7 +1066,7 @@ void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
 
                        skb2->h.raw = skb2->nh.raw;
                        skb2->pkt_type = PACKET_OUTGOING;
-                       ptype->func(skb2, skb->dev, ptype);
+                       ptype->func(skb2, skb->dev, ptype, skb->dev);
                }
        }
        rcu_read_unlock();
@@ -1100,6 +1108,19 @@ out:
        return ret;
 }
 
+/* Take action when hardware reception checksum errors are detected. */
+#ifdef CONFIG_BUG
+void netdev_rx_csum_fault(struct net_device *dev)
+{
+       if (net_ratelimit()) {
+               printk(KERN_ERR "%s: hw csum failure.\n", 
+                       dev ? dev->name : "<unknown>");
+               dump_stack();
+       }
+}
+EXPORT_SYMBOL(netdev_rx_csum_fault);
+#endif
+
 #ifdef CONFIG_HIGHMEM
 /* Actually, we should eliminate this check as soon as we know, that:
  * 1. IOMMU is present and allows to map all the memory.
@@ -1123,10 +1144,8 @@ static inline int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
 #define illegal_highdma(dev, skb)      (0)
 #endif
 
-extern void skb_release_data(struct sk_buff *);
-
 /* Keep head the same: replace data */
-int __skb_linearize(struct sk_buff *skb, unsigned int __nocast gfp_mask)
+int __skb_linearize(struct sk_buff *skb, gfp_t gfp_mask)
 {
        unsigned int size;
        u8 *data;
@@ -1253,6 +1272,8 @@ int dev_queue_xmit(struct sk_buff *skb)
                if (skb_checksum_help(skb, 0))
                        goto out_kfree_skb;
 
+       spin_lock_prefetch(&dev->queue_lock);
+
        /* Disable soft irqs for various locks below. Also 
         * stops preemption for RCU. 
         */
@@ -1379,8 +1400,8 @@ int netif_rx(struct sk_buff *skb)
        if (netpoll_rx(skb))
                return NET_RX_DROP;
 
-       if (!skb->stamp.tv_sec)
-               net_timestamp(&skb->stamp);
+       if (!skb->tstamp.off_sec)
+               net_timestamp(skb);
 
        /*
         * The code is rearranged so that the path is the most
@@ -1425,14 +1446,14 @@ int netif_rx_ni(struct sk_buff *skb)
 
 EXPORT_SYMBOL(netif_rx_ni);
 
-static __inline__ void skb_bond(struct sk_buff *skb)
+static inline struct net_device *skb_bond(struct sk_buff *skb)
 {
        struct net_device *dev = skb->dev;
 
-       if (dev->master) {
-               skb->real_dev = skb->dev;
+       if (dev->master)
                skb->dev = dev->master;
-       }
+
+       return dev;
 }
 
 static void net_tx_action(struct softirq_action *h)
@@ -1482,10 +1503,11 @@ static void net_tx_action(struct softirq_action *h)
 }
 
 static __inline__ int deliver_skb(struct sk_buff *skb,
-                                 struct packet_type *pt_prev)
+                                 struct packet_type *pt_prev,
+                                 struct net_device *orig_dev)
 {
        atomic_inc(&skb->users);
-       return pt_prev->func(skb, skb->dev, pt_prev);
+       return pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
 }
 
 #if defined(CONFIG_BRIDGE) || defined (CONFIG_BRIDGE_MODULE)
@@ -1496,7 +1518,8 @@ struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
 void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
 
 static __inline__ int handle_bridge(struct sk_buff **pskb,
-                                   struct packet_type **pt_prev, int *ret)
+                                   struct packet_type **pt_prev, int *ret,
+                                   struct net_device *orig_dev)
 {
        struct net_bridge_port *port;
 
@@ -1505,14 +1528,14 @@ static __inline__ int handle_bridge(struct sk_buff **pskb,
                return 0;
 
        if (*pt_prev) {
-               *ret = deliver_skb(*pskb, *pt_prev);
+               *ret = deliver_skb(*pskb, *pt_prev, orig_dev);
                *pt_prev = NULL;
        } 
        
        return br_handle_frame_hook(port, pskb);
 }
 #else
-#define handle_bridge(skb, pt_prev, ret)       (0)
+#define handle_bridge(skb, pt_prev, ret, orig_dev)     (0)
 #endif
 
 #ifdef CONFIG_NET_CLS_ACT
@@ -1534,17 +1557,14 @@ static int ing_filter(struct sk_buff *skb)
                __u32 ttl = (__u32) G_TC_RTTL(skb->tc_verd);
                if (MAX_RED_LOOP < ttl++) {
                        printk("Redir loop detected Dropping packet (%s->%s)\n",
-                               skb->input_dev?skb->input_dev->name:"??",skb->dev->name);
+                               skb->input_dev->name, skb->dev->name);
                        return TC_ACT_SHOT;
                }
 
                skb->tc_verd = SET_TC_RTTL(skb->tc_verd,ttl);
 
                skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_INGRESS);
-               if (NULL == skb->input_dev) {
-                       skb->input_dev = skb->dev;
-                       printk("ing_filter:  fixed  %s out %s\n",skb->input_dev->name,skb->dev->name);
-               }
+
                spin_lock(&dev->ingress_lock);
                if ((q = dev->qdisc_ingress) != NULL)
                        result = q->enqueue(skb, q);
@@ -1559,6 +1579,7 @@ static int ing_filter(struct sk_buff *skb)
 int netif_receive_skb(struct sk_buff *skb)
 {
        struct packet_type *ptype, *pt_prev;
+       struct net_device *orig_dev;
        int ret = NET_RX_DROP;
        unsigned short type;
 
@@ -1566,10 +1587,13 @@ int netif_receive_skb(struct sk_buff *skb)
        if (skb->dev->poll && netpoll_rx(skb))
                return NET_RX_DROP;
 
-       if (!skb->stamp.tv_sec)
-               net_timestamp(&skb->stamp);
+       if (!skb->tstamp.off_sec)
+               net_timestamp(skb);
+
+       if (!skb->input_dev)
+               skb->input_dev = skb->dev;
 
-       skb_bond(skb);
+       orig_dev = skb_bond(skb);
 
        __get_cpu_var(netdev_rx_stat).total++;
 
@@ -1590,14 +1614,14 @@ int netif_receive_skb(struct sk_buff *skb)
        list_for_each_entry_rcu(ptype, &ptype_all, list) {
                if (!ptype->dev || ptype->dev == skb->dev) {
                        if (pt_prev) 
-                               ret = deliver_skb(skb, pt_prev);
+                               ret = deliver_skb(skb, pt_prev, orig_dev);
                        pt_prev = ptype;
                }
        }
 
 #ifdef CONFIG_NET_CLS_ACT
        if (pt_prev) {
-               ret = deliver_skb(skb, pt_prev);
+               ret = deliver_skb(skb, pt_prev, orig_dev);
                pt_prev = NULL; /* noone else should process this after*/
        } else {
                skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
@@ -1616,7 +1640,7 @@ ncls:
 
        handle_diverter(skb);
 
-       if (handle_bridge(&skb, &pt_prev, &ret))
+       if (handle_bridge(&skb, &pt_prev, &ret, orig_dev))
                goto out;
 
        type = skb->protocol;
@@ -1624,13 +1648,13 @@ ncls:
                if (ptype->type == type &&
                    (!ptype->dev || ptype->dev == skb->dev)) {
                        if (pt_prev) 
-                               ret = deliver_skb(skb, pt_prev);
+                               ret = deliver_skb(skb, pt_prev, orig_dev);
                        pt_prev = ptype;
                }
        }
 
        if (pt_prev) {
-               ret = pt_prev->func(skb, skb->dev, pt_prev);
+               ret = pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
        } else {
                kfree_skb(skb);
                /* Jamal, now you will not able to escape explaining
@@ -2706,6 +2730,20 @@ int register_netdevice(struct net_device *dev)
                       dev->name);
                dev->features &= ~NETIF_F_TSO;
        }
+       if (dev->features & NETIF_F_UFO) {
+               if (!(dev->features & NETIF_F_HW_CSUM)) {
+                       printk(KERN_ERR "%s: Dropping NETIF_F_UFO since no "
+                                       "NETIF_F_HW_CSUM feature.\n",
+                                                       dev->name);
+                       dev->features &= ~NETIF_F_UFO;
+               }
+               if (!(dev->features & NETIF_F_SG)) {
+                       printk(KERN_ERR "%s: Dropping NETIF_F_UFO since no "
+                                       "NETIF_F_SG feature.\n",
+                                       dev->name);
+                       dev->features &= ~NETIF_F_UFO;
+               }
+       }
 
        /*
         *      nil rebuild_header routine,