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Diffstat (limited to 'net/ipv4/ip_fragment.c')
-rw-r--r--net/ipv4/ip_fragment.c65
1 files changed, 39 insertions, 26 deletions
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 37221f659159..2152d222b954 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -5,8 +5,6 @@
*
* The IP fragmentation functionality.
*
- * Version: $Id: ip_fragment.c,v 1.59 2002/01/12 07:54:56 davem Exp $
- *
* Authors: Fred N. van Kempen <waltje@uWalt.NL.Mugnet.ORG>
* Alan Cox <Alan.Cox@linux.org>
*
@@ -180,7 +178,7 @@ static void ip_evictor(struct net *net)
evicted = inet_frag_evictor(&net->ipv4.frags, &ip4_frags);
if (evicted)
- IP_ADD_STATS_BH(IPSTATS_MIB_REASMFAILS, evicted);
+ IP_ADD_STATS_BH(net, IPSTATS_MIB_REASMFAILS, evicted);
}
/*
@@ -189,8 +187,10 @@ static void ip_evictor(struct net *net)
static void ip_expire(unsigned long arg)
{
struct ipq *qp;
+ struct net *net;
qp = container_of((struct inet_frag_queue *) arg, struct ipq, q);
+ net = container_of(qp->q.net, struct net, ipv4.frags);
spin_lock(&qp->q.lock);
@@ -199,14 +199,12 @@ static void ip_expire(unsigned long arg)
ipq_kill(qp);
- IP_INC_STATS_BH(IPSTATS_MIB_REASMTIMEOUT);
- IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_REASMTIMEOUT);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);
if ((qp->q.last_in & INET_FRAG_FIRST_IN) && qp->q.fragments != NULL) {
struct sk_buff *head = qp->q.fragments;
- struct net *net;
- net = container_of(qp->q.net, struct net, ipv4.frags);
/* Send an ICMP "Fragment Reassembly Timeout" message. */
if ((head->dev = dev_get_by_index(net, qp->iif)) != NULL) {
icmp_send(head, ICMP_TIME_EXCEEDED, ICMP_EXC_FRAGTIME, 0);
@@ -263,7 +261,10 @@ static inline int ip_frag_too_far(struct ipq *qp)
rc = qp->q.fragments && (end - start) > max;
if (rc) {
- IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
+ struct net *net;
+
+ net = container_of(qp->q.net, struct net, ipv4.frags);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);
}
return rc;
@@ -487,8 +488,8 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
qp->q.fragments = head;
}
- BUG_TRAP(head != NULL);
- BUG_TRAP(FRAG_CB(head)->offset == 0);
+ WARN_ON(head == NULL);
+ WARN_ON(FRAG_CB(head)->offset != 0);
/* Allocate a new buffer for the datagram. */
ihlen = ip_hdrlen(head);
@@ -547,7 +548,7 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
iph = ip_hdr(head);
iph->frag_off = 0;
iph->tot_len = htons(len);
- IP_INC_STATS_BH(IPSTATS_MIB_REASMOKS);
+ IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_REASMOKS);
qp->q.fragments = NULL;
return 0;
@@ -562,7 +563,7 @@ out_oversize:
"Oversized IP packet from " NIPQUAD_FMT ".\n",
NIPQUAD(qp->saddr));
out_fail:
- IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
+ IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_REASMFAILS);
return err;
}
@@ -572,9 +573,9 @@ int ip_defrag(struct sk_buff *skb, u32 user)
struct ipq *qp;
struct net *net;
- IP_INC_STATS_BH(IPSTATS_MIB_REASMREQDS);
-
net = skb->dev ? dev_net(skb->dev) : dev_net(skb->dst->dev);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_REASMREQDS);
+
/* Start by cleaning up the memory. */
if (atomic_read(&net->ipv4.frags.mem) > net->ipv4.frags.high_thresh)
ip_evictor(net);
@@ -592,7 +593,7 @@ int ip_defrag(struct sk_buff *skb, u32 user)
return ret;
}
- IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);
kfree_skb(skb);
return -ENOMEM;
}
@@ -600,7 +601,7 @@ int ip_defrag(struct sk_buff *skb, u32 user)
#ifdef CONFIG_SYSCTL
static int zero;
-static struct ctl_table ip4_frags_ctl_table[] = {
+static struct ctl_table ip4_frags_ns_ctl_table[] = {
{
.ctl_name = NET_IPV4_IPFRAG_HIGH_THRESH,
.procname = "ipfrag_high_thresh",
@@ -626,6 +627,10 @@ static struct ctl_table ip4_frags_ctl_table[] = {
.proc_handler = &proc_dointvec_jiffies,
.strategy = &sysctl_jiffies
},
+ { }
+};
+
+static struct ctl_table ip4_frags_ctl_table[] = {
{
.ctl_name = NET_IPV4_IPFRAG_SECRET_INTERVAL,
.procname = "ipfrag_secret_interval",
@@ -646,22 +651,20 @@ static struct ctl_table ip4_frags_ctl_table[] = {
{ }
};
-static int ip4_frags_ctl_register(struct net *net)
+static int ip4_frags_ns_ctl_register(struct net *net)
{
struct ctl_table *table;
struct ctl_table_header *hdr;
- table = ip4_frags_ctl_table;
+ table = ip4_frags_ns_ctl_table;
if (net != &init_net) {
- table = kmemdup(table, sizeof(ip4_frags_ctl_table), GFP_KERNEL);
+ table = kmemdup(table, sizeof(ip4_frags_ns_ctl_table), GFP_KERNEL);
if (table == NULL)
goto err_alloc;
table[0].data = &net->ipv4.frags.high_thresh;
table[1].data = &net->ipv4.frags.low_thresh;
table[2].data = &net->ipv4.frags.timeout;
- table[3].mode &= ~0222;
- table[4].mode &= ~0222;
}
hdr = register_net_sysctl_table(net, net_ipv4_ctl_path, table);
@@ -678,7 +681,7 @@ err_alloc:
return -ENOMEM;
}
-static void ip4_frags_ctl_unregister(struct net *net)
+static void ip4_frags_ns_ctl_unregister(struct net *net)
{
struct ctl_table *table;
@@ -686,13 +689,22 @@ static void ip4_frags_ctl_unregister(struct net *net)
unregister_net_sysctl_table(net->ipv4.frags_hdr);
kfree(table);
}
+
+static void ip4_frags_ctl_register(void)
+{
+ register_net_sysctl_rotable(net_ipv4_ctl_path, ip4_frags_ctl_table);
+}
#else
-static inline int ip4_frags_ctl_register(struct net *net)
+static inline int ip4_frags_ns_ctl_register(struct net *net)
{
return 0;
}
-static inline void ip4_frags_ctl_unregister(struct net *net)
+static inline void ip4_frags_ns_ctl_unregister(struct net *net)
+{
+}
+
+static inline void ip4_frags_ctl_register(void)
{
}
#endif
@@ -716,12 +728,12 @@ static int ipv4_frags_init_net(struct net *net)
inet_frags_init_net(&net->ipv4.frags);
- return ip4_frags_ctl_register(net);
+ return ip4_frags_ns_ctl_register(net);
}
static void ipv4_frags_exit_net(struct net *net)
{
- ip4_frags_ctl_unregister(net);
+ ip4_frags_ns_ctl_unregister(net);
inet_frags_exit_net(&net->ipv4.frags, &ip4_frags);
}
@@ -732,6 +744,7 @@ static struct pernet_operations ip4_frags_ops = {
void __init ipfrag_init(void)
{
+ ip4_frags_ctl_register();
register_pernet_subsys(&ip4_frags_ops);
ip4_frags.hashfn = ip4_hashfn;
ip4_frags.constructor = ip4_frag_init;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 22:42:08 +0100