tcp: add helper for AI algorithm

[safe/jmp/linux-2.6] / net / ipv4 / ipip.c

diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 29609d2..9054139 100644 (file)
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -130,8 +130,8 @@ struct ipip_net {
        struct net_device *fb_tunnel_dev;
 };
 
-static int ipip_fb_tunnel_init(struct net_device *dev);
-static int ipip_tunnel_init(struct net_device *dev);
+static void ipip_fb_tunnel_init(struct net_device *dev);
+static void ipip_tunnel_init(struct net_device *dev);
 static void ipip_tunnel_setup(struct net_device *dev);
 
 static DEFINE_RWLOCK(ipip_lock);
@@ -245,9 +245,10 @@ static struct ip_tunnel * ipip_tunnel_locate(struct net *net,
        }
 
        nt = netdev_priv(dev);
-       dev->init = ipip_tunnel_init;
        nt->parms = *parms;
 
+       ipip_tunnel_init(dev);
+
        if (register_netdevice(dev) < 0)
                goto failed_free;
 
@@ -281,7 +282,7 @@ static int ipip_err(struct sk_buff *skb, u32 info)
    8 bytes of packet payload. It means, that precise relaying of
    ICMP in the real Internet is absolutely infeasible.
  */
-       struct iphdr *iph = (struct iphdr*)skb->data;
+       struct iphdr *iph = (struct iphdr *)skb->data;
        const int type = icmp_hdr(skb)->type;
        const int code = icmp_hdr(skb)->code;
        struct ip_tunnel *t;
@@ -326,7 +327,7 @@ static int ipip_err(struct sk_buff *skb, u32 info)
        if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED)
                goto out;
 
-       if (jiffies - t->err_time < IPTUNNEL_ERR_TIMEO)
+       if (time_before(jiffies, t->err_time + IPTUNNEL_ERR_TIMEO))
                t->err_count++;
        else
                t->err_count = 1;
@@ -465,7 +466,8 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
        }
 
        if (tunnel->err_count > 0) {
-               if (jiffies - tunnel->err_time < IPTUNNEL_ERR_TIMEO) {
+               if (time_before(jiffies,
+                               tunnel->err_time + IPTUNNEL_ERR_TIMEO)) {
                        tunnel->err_count--;
                        dst_link_failure(skb);
                } else
@@ -691,12 +693,17 @@ static int ipip_tunnel_change_mtu(struct net_device *dev, int new_mtu)
        return 0;
 }
 
+static const struct net_device_ops ipip_netdev_ops = {
+       .ndo_uninit     = ipip_tunnel_uninit,
+       .ndo_start_xmit = ipip_tunnel_xmit,
+       .ndo_do_ioctl   = ipip_tunnel_ioctl,
+       .ndo_change_mtu = ipip_tunnel_change_mtu,
+
+};
+
 static void ipip_tunnel_setup(struct net_device *dev)
 {
-       dev->uninit             = ipip_tunnel_uninit;
-       dev->hard_start_xmit    = ipip_tunnel_xmit;
-       dev->do_ioctl           = ipip_tunnel_ioctl;
-       dev->change_mtu         = ipip_tunnel_change_mtu;
+       dev->netdev_ops         = &ipip_netdev_ops;
        dev->destructor         = free_netdev;
 
        dev->type               = ARPHRD_TUNNEL;
@@ -708,11 +715,9 @@ static void ipip_tunnel_setup(struct net_device *dev)
        dev->features           |= NETIF_F_NETNS_LOCAL;
 }
 
-static int ipip_tunnel_init(struct net_device *dev)
+static void ipip_tunnel_init(struct net_device *dev)
 {
-       struct ip_tunnel *tunnel;
-
-       tunnel = netdev_priv(dev);
+       struct ip_tunnel *tunnel = netdev_priv(dev);
 
        tunnel->dev = dev;
        strcpy(tunnel->parms.name, dev->name);
@@ -721,11 +726,9 @@ static int ipip_tunnel_init(struct net_device *dev)
        memcpy(dev->broadcast, &tunnel->parms.iph.daddr, 4);
 
        ipip_tunnel_bind_dev(dev);
-
-       return 0;
 }
 
-static int ipip_fb_tunnel_init(struct net_device *dev)
+static void ipip_fb_tunnel_init(struct net_device *dev)
 {
        struct ip_tunnel *tunnel = netdev_priv(dev);
        struct iphdr *iph = &tunnel->parms.iph;
@@ -740,7 +743,6 @@ static int ipip_fb_tunnel_init(struct net_device *dev)
 
        dev_hold(dev);
        ipn->tunnels_wc[0]      = tunnel;
-       return 0;
 }
 
 static struct xfrm_tunnel ipip_handler = {
@@ -749,7 +751,7 @@ static struct xfrm_tunnel ipip_handler = {
        .priority       =       1,
 };
 
-static char banner[] __initdata =
+static const char banner[] __initconst =
        KERN_INFO "IPv4 over IPv4 tunneling driver\n";
 
 static void ipip_destroy_tunnels(struct ipip_net *ipn)
@@ -792,10 +794,10 @@ static int ipip_init_net(struct net *net)
                err = -ENOMEM;
                goto err_alloc_dev;
        }
-
-       ipn->fb_tunnel_dev->init = ipip_fb_tunnel_init;
        dev_net_set(ipn->fb_tunnel_dev, net);
 
+       ipip_fb_tunnel_init(ipn->fb_tunnel_dev);
+
        if ((err = register_netdev(ipn->fb_tunnel_dev)))
                goto err_reg_dev;