| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 22 Jan 2008 17:02:17 +0300
From: Pavel Emelyanov <xemul@...nvz.org>
To: David Miller <davem@...emloft.net>
CC: Linux Netdev List <netdev@...r.kernel.org>, devel@...nvz.org
Subject: [PATCH net-2.6.25 6/10][NETNS][FRAGS]: Make the net.ipv4.ipfrag_timeout
work in namespaces.
Move it to the netns_frags, adjust the usage and
make the appropriate ctl table writable.
Now fragment, that live in different namespaces can
live for different times.
Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
---
include/net/inet_frag.h | 4 +++-
net/ipv4/inet_fragment.c | 2 +-
net/ipv4/ip_fragment.c | 20 ++++++++++----------
net/ipv6/netfilter/nf_conntrack_reasm.c | 4 ++--
net/ipv6/reassembly.c | 6 +++---
5 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 6edce7b..f56e296 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -4,6 +4,9 @@
struct netns_frags {
int nqueues;
atomic_t mem;
+
+ /* sysctls */
+ int timeout;
};
struct inet_frag_queue {
@@ -29,7 +32,6 @@ struct inet_frag_queue {
struct inet_frags_ctl {
int high_thresh;
int low_thresh;
- int timeout;
int secret_interval;
};
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index ad79ae0..9da9679 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -206,7 +206,7 @@ static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf,
}
#endif
qp = qp_in;
- if (!mod_timer(&qp->timer, jiffies + f->ctl->timeout))
+ if (!mod_timer(&qp->timer, jiffies + nf->timeout))
atomic_inc(&qp->refcnt);
atomic_inc(&qp->refcnt);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index c51e1a1..70d241c 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -83,13 +83,6 @@ static struct inet_frags_ctl ip4_frags_ctl __read_mostly = {
*/
.high_thresh = 256 * 1024,
.low_thresh = 192 * 1024,
-
- /*
- * Important NOTE! Fragment queue must be destroyed before MSL expires.
- * RFC791 is wrong proposing to prolongate timer each fragment arrival
- * by TTL.
- */
- .timeout = IP_FRAG_TIME,
.secret_interval = 10 * 60 * HZ,
};
@@ -287,7 +280,7 @@ static int ip_frag_reinit(struct ipq *qp)
{
struct sk_buff *fp;
- if (!mod_timer(&qp->q.timer, jiffies + ip4_frags_ctl.timeout)) {
+ if (!mod_timer(&qp->q.timer, jiffies + qp->q.net->timeout)) {
atomic_inc(&qp->q.refcnt);
return -ETIMEDOUT;
}
@@ -633,7 +626,7 @@ static struct ctl_table ip4_frags_ctl_table[] = {
{
.ctl_name = NET_IPV4_IPFRAG_TIME,
.procname = "ipfrag_time",
- .data = &ip4_frags_ctl.timeout,
+ .data = &init_net.ipv4.frags.timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -672,7 +665,7 @@ static int ip4_frags_ctl_register(struct net *net)
table[0].mode &= ~0222;
table[1].mode &= ~0222;
- table[2].mode &= ~0222;
+ table[2].data = &net->ipv4.frags.timeout;
table[3].mode &= ~0222;
table[4].mode &= ~0222;
}
@@ -712,6 +705,13 @@ static inline void ip4_frags_ctl_unregister(struct net *net)
static int ipv4_frags_init_net(struct net *net)
{
+ /*
+ * Important NOTE! Fragment queue must be destroyed before MSL expires.
+ * RFC791 is wrong proposing to prolongate timer each fragment arrival
+ * by TTL.
+ */
+ net->ipv4.frags.timeout = IP_FRAG_TIME;
+
inet_frags_init_net(&net->ipv4.frags);
return ip4_frags_ctl_register(net);
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index cb826be..92a311f 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -73,7 +73,6 @@ struct nf_ct_frag6_queue
static struct inet_frags_ctl nf_frags_ctl __read_mostly = {
.high_thresh = 256 * 1024,
.low_thresh = 192 * 1024,
- .timeout = IPV6_FRAG_TIMEOUT,
.secret_interval = 10 * 60 * HZ,
};
@@ -84,7 +83,7 @@ static struct netns_frags nf_init_frags;
struct ctl_table nf_ct_ipv6_sysctl_table[] = {
{
.procname = "nf_conntrack_frag6_timeout",
- .data = &nf_frags_ctl.timeout,
+ .data = &nf_init_frags.timeout,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -712,6 +711,7 @@ int nf_ct_frag6_init(void)
nf_frags.qsize = sizeof(struct nf_ct_frag6_queue);
nf_frags.match = ip6_frag_match;
nf_frags.frag_expire = nf_ct_frag6_expire;
+ nf_init_frags.timeout = IPV6_FRAG_TIMEOUT;
inet_frags_init_net(&nf_init_frags);
inet_frags_init(&nf_frags);
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 0300dcb..9176136 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -650,7 +650,7 @@ static struct ctl_table ip6_frags_ctl_table[] = {
{
.ctl_name = NET_IPV6_IP6FRAG_TIME,
.procname = "ip6frag_time",
- .data = &init_net.ipv6.sysctl.frags.timeout,
+ .data = &init_net.ipv6.frags.timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -681,7 +681,7 @@ static int ip6_frags_sysctl_register(struct net *net)
table[0].mode &= ~0222;
table[1].mode &= ~0222;
- table[2].mode &= ~0222;
+ table[2].data = &net->ipv6.frags.timeout;
table[3].mode &= ~0222;
}
@@ -724,7 +724,7 @@ static int ipv6_frags_init_net(struct net *net)
net->ipv6.sysctl.frags.high_thresh = 256 * 1024;
net->ipv6.sysctl.frags.low_thresh = 192 * 1024;
- net->ipv6.sysctl.frags.timeout = IPV6_FRAG_TIMEOUT;
+ net->ipv6.frags.timeout = IPV6_FRAG_TIMEOUT;
net->ipv6.sysctl.frags.secret_interval = 10 * 60 * HZ;
inet_frags_init_net(&net->ipv6.frags);
--
1.5.3.4
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists