[NET]: Make /proc/net per network namespace

[linux-block.git] / net / ipv4 / arp.c

diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 1a3488a83f49363a7d5200f37d01371f81cfd938..78dd3443016c1e519ad8b9a141bc300ec559dd23 100644 (file)
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -103,6 +103,7 @@
 #include <linux/sysctl.h>
 #endif
 
+#include <net/net_namespace.h>
 #include <net/ip.h>
 #include <net/icmp.h>
 #include <net/route.h>
@@ -342,13 +343,13 @@ static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb)
        switch (IN_DEV_ARP_ANNOUNCE(in_dev)) {
        default:
        case 0:         /* By default announce any local IP */
-               if (skb && inet_addr_type(skb->nh.iph->saddr) == RTN_LOCAL)
-                       saddr = skb->nh.iph->saddr;
+               if (skb && inet_addr_type(ip_hdr(skb)->saddr) == RTN_LOCAL)
+                       saddr = ip_hdr(skb)->saddr;
                break;
        case 1:         /* Restrict announcements of saddr in same subnet */
                if (!skb)
                        break;
-               saddr = skb->nh.iph->saddr;
+               saddr = ip_hdr(skb)->saddr;
                if (inet_addr_type(saddr) == RTN_LOCAL) {
                        /* saddr should be known to target */
                        if (inet_addr_onlink(in_dev, target, saddr))
@@ -578,7 +579,7 @@ struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip,
                return NULL;
 
        skb_reserve(skb, LL_RESERVED_SPACE(dev));
-       skb->nh.raw = skb->data;
+       skb_reset_network_header(skb);
        arp = (struct arphdr *) skb_put(skb,sizeof(struct arphdr) + 2*(dev->addr_len+4));
        skb->dev = dev;
        skb->protocol = htons(ETH_P_ARP);
@@ -721,7 +722,7 @@ static int arp_process(struct sk_buff *skb)
        if (in_dev == NULL)
                goto out;
 
-       arp = skb->nh.arph;
+       arp = arp_hdr(skb);
 
        switch (dev_type) {
        default:
@@ -877,7 +878,7 @@ static int arp_process(struct sk_buff *skb)
 
        n = __neigh_lookup(&arp_tbl, &sip, dev, 0);
 
-       if (ipv4_devconf.arp_accept) {
+       if (IPV4_DEVCONF_ALL(ARP_ACCEPT)) {
                /* Unsolicited ARP is not accepted by default.
                   It is possible, that this option should be enabled for some
                   devices (strip is candidate)
@@ -885,7 +886,7 @@ static int arp_process(struct sk_buff *skb)
                if (n == NULL &&
                    arp->ar_op == htons(ARPOP_REPLY) &&
                    inet_addr_type(sip) == RTN_UNICAST)
-                       n = __neigh_lookup(&arp_tbl, &sip, dev, -1);
+                       n = __neigh_lookup(&arp_tbl, &sip, dev, 1);
        }
 
        if (n) {
@@ -937,7 +938,7 @@ static int arp_rcv(struct sk_buff *skb, struct net_device *dev,
                                 (2 * sizeof(u32)))))
                goto freeskb;
 
-       arp = skb->nh.arph;
+       arp = arp_hdr(skb);
        if (arp->ar_hln != dev->addr_len ||
            dev->flags & IFF_NOARP ||
            skb->pkt_type == PACKET_OTHERHOST ||
@@ -987,11 +988,11 @@ static int arp_req_set(struct arpreq *r, struct net_device * dev)
                        return 0;
                }
                if (dev == NULL) {
-                       ipv4_devconf.proxy_arp = 1;
+                       IPV4_DEVCONF_ALL(PROXY_ARP) = 1;
                        return 0;
                }
                if (__in_dev_get_rtnl(dev)) {
-                       __in_dev_get_rtnl(dev)->cnf.proxy_arp = 1;
+                       IN_DEV_CONF_SET(__in_dev_get_rtnl(dev), PROXY_ARP, 1);
                        return 0;
                }
                return -ENXIO;
@@ -1093,11 +1094,12 @@ static int arp_req_delete(struct arpreq *r, struct net_device * dev)
                        return pneigh_delete(&arp_tbl, &ip, dev);
                if (mask == 0) {
                        if (dev == NULL) {
-                               ipv4_devconf.proxy_arp = 0;
+                               IPV4_DEVCONF_ALL(PROXY_ARP) = 0;
                                return 0;
                        }
                        if (__in_dev_get_rtnl(dev)) {
-                               __in_dev_get_rtnl(dev)->cnf.proxy_arp = 0;
+                               IN_DEV_CONF_SET(__in_dev_get_rtnl(dev),
+                                               PROXY_ARP, 0);
                                return 0;
                        }
                        return -ENXIO;
@@ -1178,7 +1180,7 @@ int arp_ioctl(unsigned int cmd, void __user *arg)
                goto out;
        }
 
-       switch(cmd) {
+       switch (cmd) {
        case SIOCDARP:
                err = arp_req_delete(&r, dev);
                break;
@@ -1360,7 +1362,7 @@ static void *arp_seq_start(struct seq_file *seq, loff_t *pos)
 
 /* ------------------------------------------------------------------------ */
 
-static struct seq_operations arp_seq_ops = {
+static const struct seq_operations arp_seq_ops = {
        .start  = arp_seq_start,
        .next   = neigh_seq_next,
        .stop   = neigh_seq_stop,
@@ -1399,7 +1401,7 @@ static const struct file_operations arp_seq_fops = {
 
 static int __init arp_proc_init(void)
 {
-       if (!proc_net_fops_create("arp", S_IRUGO, &arp_seq_fops))
+       if (!proc_net_fops_create(&init_net, "arp", S_IRUGO, &arp_seq_fops))
                return -ENOMEM;
        return 0;
 }