mib: put net statistics on struct net

[linux-2.6] / net / ipv4 / af_inet.c

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 06cfb0bed631833aceeeb4b82ff00780f1b5626b..776ed3199b52027254a8d37171fcdaa1bb152c84 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -5,8 +5,6 @@
  *
  *             PF_INET protocol family socket handler.
  *
- * Version:    $Id: af_inet.c,v 1.137 2002/02/01 22:01:03 davem Exp $
- *
  * Authors:    Ross Biro
  *             Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  *             Florian La Roche, <flla@stud.uni-sb.de>
@@ -112,12 +110,11 @@
 #include <net/ipip.h>
 #include <net/inet_common.h>
 #include <net/xfrm.h>
+#include <net/net_namespace.h>
 #ifdef CONFIG_IP_MROUTE
 #include <linux/mroute.h>
 #endif
 
-DEFINE_SNMP_STAT(struct linux_mib, net_statistics) __read_mostly;
-
 extern void ip_mc_drop_socket(struct sock *sk);
 
 /* The inetsw table contains everything that inet_create needs to
@@ -464,7 +461,7 @@ int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
        if (addr_len < sizeof(struct sockaddr_in))
                goto out;
 
-       chk_addr_ret = inet_addr_type(sk->sk_net, addr->sin_addr.s_addr);
+       chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
 
        /* Not specified by any standard per-se, however it breaks too
         * many applications when removed.  It is unfortunate since
@@ -802,7 +799,7 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 {
        struct sock *sk = sock->sk;
        int err = 0;
-       struct net *net = sk->sk_net;
+       struct net *net = sock_net(sk);
 
        switch (cmd) {
                case SIOCGSTAMP:
@@ -1077,7 +1074,7 @@ static int inet_sk_reselect_saddr(struct sock *sk)
 
        if (sysctl_ip_dynaddr > 1) {
                printk(KERN_INFO "%s(): shifting inet->"
-                                "saddr from %d.%d.%d.%d to %d.%d.%d.%d\n",
+                                "saddr from " NIPQUAD_FMT " to " NIPQUAD_FMT "\n",
                       __func__,
                       NIPQUAD(old_saddr),
                       NIPQUAD(new_saddr));
@@ -1132,7 +1129,7 @@ int inet_sk_rebuild_header(struct sock *sk)
        };
 
        security_sk_classify_flow(sk, &fl);
-       err = ip_route_output_flow(sk->sk_net, &rt, &fl, sk, 0);
+       err = ip_route_output_flow(sock_net(sk), &rt, &fl, sk, 0);
 }
        if (!err)
                sk_setup_caps(sk, &rt->u.dst);
@@ -1234,7 +1231,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int features)
                segs = ops->gso_segment(skb, features);
        rcu_read_unlock();
 
-       if (!segs || unlikely(IS_ERR(segs)))
+       if (!segs || IS_ERR(segs))
                goto out;
 
        skb = segs;
@@ -1250,6 +1247,29 @@ out:
        return segs;
 }
 
+int inet_ctl_sock_create(struct sock **sk, unsigned short family,
+                        unsigned short type, unsigned char protocol,
+                        struct net *net)
+{
+       struct socket *sock;
+       int rc = sock_create_kern(family, type, protocol, &sock);
+
+       if (rc == 0) {
+               *sk = sock->sk;
+               (*sk)->sk_allocation = GFP_ATOMIC;
+               /*
+                * Unhash it so that IP input processing does not even see it,
+                * we do not wish this socket to see incoming packets.
+                */
+               (*sk)->sk_prot->unhash(*sk);
+
+               sk_change_net(*sk, net);
+       }
+       return rc;
+}
+
+EXPORT_SYMBOL_GPL(inet_ctl_sock_create);
+
 unsigned long snmp_fold_field(void *mib[], int offt)
 {
        unsigned long res = 0;
@@ -1318,23 +1338,49 @@ static struct net_protocol icmp_protocol = {
        .netns_ok =     1,
 };
 
-static int __init init_ipv4_mibs(void)
+static __net_init int ipv4_mib_init_net(struct net *net)
 {
-       if (snmp_mib_init((void **)net_statistics,
-                         sizeof(struct linux_mib)) < 0)
-               goto err_net_mib;
-       if (snmp_mib_init((void **)ip_statistics,
+       if (snmp_mib_init((void **)net->mib.tcp_statistics,
+                         sizeof(struct tcp_mib)) < 0)
+               goto err_tcp_mib;
+       if (snmp_mib_init((void **)net->mib.ip_statistics,
                          sizeof(struct ipstats_mib)) < 0)
                goto err_ip_mib;
+       if (snmp_mib_init((void **)net->mib.net_statistics,
+                         sizeof(struct linux_mib)) < 0)
+               goto err_net_mib;
+
+       tcp_mib_init(net);
+       return 0;
+
+err_net_mib:
+       snmp_mib_free((void **)net->mib.ip_statistics);
+err_ip_mib:
+       snmp_mib_free((void **)net->mib.tcp_statistics);
+err_tcp_mib:
+       return -ENOMEM;
+}
+
+static __net_exit void ipv4_mib_exit_net(struct net *net)
+{
+       snmp_mib_free((void **)net->mib.net_statistics);
+       snmp_mib_free((void **)net->mib.ip_statistics);
+       snmp_mib_free((void **)net->mib.tcp_statistics);
+}
+
+static __net_initdata struct pernet_operations ipv4_mib_ops = {
+       .init = ipv4_mib_init_net,
+       .exit = ipv4_mib_exit_net,
+};
+
+static int __init init_ipv4_mibs(void)
+{
        if (snmp_mib_init((void **)icmp_statistics,
                          sizeof(struct icmp_mib)) < 0)
                goto err_icmp_mib;
        if (snmp_mib_init((void **)icmpmsg_statistics,
                          sizeof(struct icmpmsg_mib)) < 0)
                goto err_icmpmsg_mib;
-       if (snmp_mib_init((void **)tcp_statistics,
-                         sizeof(struct tcp_mib)) < 0)
-               goto err_tcp_mib;
        if (snmp_mib_init((void **)udp_statistics,
                          sizeof(struct udp_mib)) < 0)
                goto err_udp_mib;
@@ -1342,23 +1388,20 @@ static int __init init_ipv4_mibs(void)
                          sizeof(struct udp_mib)) < 0)
                goto err_udplite_mib;
 
-       tcp_mib_init();
+       if (register_pernet_subsys(&ipv4_mib_ops))
+               goto err_net;
 
        return 0;
 
+err_net:
+       snmp_mib_free((void **)udplite_statistics);
 err_udplite_mib:
        snmp_mib_free((void **)udp_statistics);
 err_udp_mib:
-       snmp_mib_free((void **)tcp_statistics);
-err_tcp_mib:
        snmp_mib_free((void **)icmpmsg_statistics);
 err_icmpmsg_mib:
        snmp_mib_free((void **)icmp_statistics);
 err_icmp_mib:
-       snmp_mib_free((void **)ip_statistics);
-err_ip_mib:
-       snmp_mib_free((void **)net_statistics);
-err_net_mib:
        return -ENOMEM;
 }
 
@@ -1458,14 +1501,15 @@ static int __init inet_init(void)
         *      Initialise the multicast router
         */
 #if defined(CONFIG_IP_MROUTE)
-       ip_mr_init();
+       if (ip_mr_init())
+               printk(KERN_CRIT "inet_init: Cannot init ipv4 mroute\n");
 #endif
        /*
         *      Initialise per-cpu ipv4 mibs
         */
 
        if (init_ipv4_mibs())
-               printk(KERN_CRIT "inet_init: Cannot init ipv4 mibs\n"); ;
+               printk(KERN_CRIT "inet_init: Cannot init ipv4 mibs\n");
 
        ipv4_proc_init();
 
@@ -1537,5 +1581,4 @@ EXPORT_SYMBOL(inet_sock_destruct);
 EXPORT_SYMBOL(inet_stream_connect);
 EXPORT_SYMBOL(inet_stream_ops);
 EXPORT_SYMBOL(inet_unregister_protosw);
-EXPORT_SYMBOL(net_statistics);
 EXPORT_SYMBOL(sysctl_ip_nonlocal_bind);