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Diffstat (limited to 'net/ipv4/arp.c')
-rw-r--r--net/ipv4/arp.c58
1 files changed, 33 insertions, 25 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 8e17f65f4002..3ce2e137e7bc 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -242,7 +242,7 @@ static int arp_constructor(struct neighbour *neigh)
return -EINVAL;
}
- neigh->type = inet_addr_type(&init_net, addr);
+ neigh->type = inet_addr_type(dev_net(dev), addr);
parms = in_dev->arp_parms;
__neigh_parms_put(neigh->parms);
@@ -341,14 +341,14 @@ 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(&init_net, ip_hdr(skb)->saddr) == RTN_LOCAL)
+ if (skb && inet_addr_type(dev_net(dev), 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 = ip_hdr(skb)->saddr;
- if (inet_addr_type(&init_net, saddr) == RTN_LOCAL) {
+ if (inet_addr_type(dev_net(dev), saddr) == RTN_LOCAL) {
/* saddr should be known to target */
if (inet_addr_onlink(in_dev, target, saddr))
break;
@@ -424,7 +424,7 @@ static int arp_filter(__be32 sip, __be32 tip, struct net_device *dev)
int flag = 0;
/*unsigned long now; */
- if (ip_route_output_key(&init_net, &rt, &fl) < 0)
+ if (ip_route_output_key(dev_net(dev), &rt, &fl) < 0)
return 1;
if (rt->u.dst.dev != dev) {
NET_INC_STATS_BH(LINUX_MIB_ARPFILTER);
@@ -475,9 +475,9 @@ int arp_find(unsigned char *haddr, struct sk_buff *skb)
return 1;
}
- paddr = ((struct rtable*)skb->dst)->rt_gateway;
+ paddr = skb->rtable->rt_gateway;
- if (arp_set_predefined(inet_addr_type(&init_net, paddr), haddr, paddr, dev))
+ if (arp_set_predefined(inet_addr_type(dev_net(dev), paddr), haddr, paddr, dev))
return 0;
n = __neigh_lookup(&arp_tbl, &paddr, dev, 1);
@@ -570,14 +570,13 @@ struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip,
* Allocate a buffer
*/
- skb = alloc_skb(sizeof(struct arphdr)+ 2*(dev->addr_len+4)
- + LL_RESERVED_SPACE(dev), GFP_ATOMIC);
+ skb = alloc_skb(arp_hdr_len(dev) + LL_RESERVED_SPACE(dev), GFP_ATOMIC);
if (skb == NULL)
return NULL;
skb_reserve(skb, LL_RESERVED_SPACE(dev));
skb_reset_network_header(skb);
- arp = (struct arphdr *) skb_put(skb,sizeof(struct arphdr) + 2*(dev->addr_len+4));
+ arp = (struct arphdr *) skb_put(skb, arp_hdr_len(dev));
skb->dev = dev;
skb->protocol = htons(ETH_P_ARP);
if (src_hw == NULL)
@@ -710,6 +709,7 @@ static int arp_process(struct sk_buff *skb)
u16 dev_type = dev->type;
int addr_type;
struct neighbour *n;
+ struct net *net = dev_net(dev);
/* arp_rcv below verifies the ARP header and verifies the device
* is ARP'able.
@@ -805,7 +805,7 @@ static int arp_process(struct sk_buff *skb)
/* Special case: IPv4 duplicate address detection packet (RFC2131) */
if (sip == 0) {
if (arp->ar_op == htons(ARPOP_REQUEST) &&
- inet_addr_type(&init_net, tip) == RTN_LOCAL &&
+ inet_addr_type(net, tip) == RTN_LOCAL &&
!arp_ignore(in_dev, sip, tip))
arp_send(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip, sha,
dev->dev_addr, sha);
@@ -815,7 +815,7 @@ static int arp_process(struct sk_buff *skb)
if (arp->ar_op == htons(ARPOP_REQUEST) &&
ip_route_input(skb, tip, sip, 0, dev) == 0) {
- rt = (struct rtable*)skb->dst;
+ rt = skb->rtable;
addr_type = rt->rt_type;
if (addr_type == RTN_LOCAL) {
@@ -835,7 +835,7 @@ static int arp_process(struct sk_buff *skb)
goto out;
} else if (IN_DEV_FORWARD(in_dev)) {
if (addr_type == RTN_UNICAST && rt->u.dst.dev != dev &&
- (arp_fwd_proxy(in_dev, rt) || pneigh_lookup(&arp_tbl, &init_net, &tip, dev, 0))) {
+ (arp_fwd_proxy(in_dev, rt) || pneigh_lookup(&arp_tbl, net, &tip, dev, 0))) {
n = neigh_event_ns(&arp_tbl, sha, &sip, dev);
if (n)
neigh_release(n);
@@ -858,14 +858,14 @@ static int arp_process(struct sk_buff *skb)
n = __neigh_lookup(&arp_tbl, &sip, dev, 0);
- if (IPV4_DEVCONF_ALL(dev->nd_net, ARP_ACCEPT)) {
+ if (IPV4_DEVCONF_ALL(dev_net(dev), ARP_ACCEPT)) {
/* Unsolicited ARP is not accepted by default.
It is possible, that this option should be enabled for some
devices (strip is candidate)
*/
if (n == NULL &&
arp->ar_op == htons(ARPOP_REPLY) &&
- inet_addr_type(&init_net, sip) == RTN_UNICAST)
+ inet_addr_type(net, sip) == RTN_UNICAST)
n = __neigh_lookup(&arp_tbl, &sip, dev, 1);
}
@@ -912,13 +912,8 @@ static int arp_rcv(struct sk_buff *skb, struct net_device *dev,
{
struct arphdr *arp;
- if (dev->nd_net != &init_net)
- goto freeskb;
-
/* ARP header, plus 2 device addresses, plus 2 IP addresses. */
- if (!pskb_may_pull(skb, (sizeof(struct arphdr) +
- (2 * dev->addr_len) +
- (2 * sizeof(u32)))))
+ if (!pskb_may_pull(skb, arp_hdr_len(dev)))
goto freeskb;
arp = arp_hdr(skb);
@@ -1201,9 +1196,6 @@ static int arp_netdev_event(struct notifier_block *this, unsigned long event, vo
{
struct net_device *dev = ptr;
- if (dev->nd_net != &init_net)
- return NOTIFY_DONE;
-
switch (event) {
case NETDEV_CHANGEADDR:
neigh_changeaddr(&arp_tbl, dev);
@@ -1385,13 +1377,29 @@ static const struct file_operations arp_seq_fops = {
.release = seq_release_net,
};
-static int __init arp_proc_init(void)
+
+static int __net_init arp_net_init(struct net *net)
{
- if (!proc_net_fops_create(&init_net, "arp", S_IRUGO, &arp_seq_fops))
+ if (!proc_net_fops_create(net, "arp", S_IRUGO, &arp_seq_fops))
return -ENOMEM;
return 0;
}
+static void __net_exit arp_net_exit(struct net *net)
+{
+ proc_net_remove(net, "arp");
+}
+
+static struct pernet_operations arp_net_ops = {
+ .init = arp_net_init,
+ .exit = arp_net_exit,
+};
+
+static int __init arp_proc_init(void)
+{
+ return register_pernet_subsys(&arp_net_ops);
+}
+
#else /* CONFIG_PROC_FS */
static int __init arp_proc_init(void)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 12:26:13 +0000