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Date: Sat, 14 Dec 2013 05:13:38 +0100
From: Hannes Frederic Sowa <hannes@...essinduktion.org>
To: netdev@...r.kernel.org
Subject: [PATCH net-next 1/2] inet: make no_pmtu_disc per namespace and kill ipv4_config
The other field in ipv4_config, log_martians, was converted to a
per-interface setting, so we can just remove the whole structure.
Signed-off-by: Hannes Frederic Sowa <hannes@...essinduktion.org>
---
include/net/ip.h | 6 ------
include/net/netns/ipv4.h | 1 +
net/ipv4/af_inet.c | 5 +----
net/ipv4/icmp.c | 2 +-
net/ipv4/sysctl_net_ipv4.c | 14 +++++++-------
net/ipv4/xfrm4_state.c | 2 +-
net/ipv6/af_inet6.c | 2 +-
7 files changed, 12 insertions(+), 20 deletions(-)
diff --git a/include/net/ip.h b/include/net/ip.h
index 5a25f36..5356644 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -177,12 +177,6 @@ void ip_send_unicast_reply(struct net *net, struct sk_buff *skb, __be32 daddr,
__be32 saddr, const struct ip_reply_arg *arg,
unsigned int len);
-struct ipv4_config {
- int log_martians;
- int no_pmtu_disc;
-};
-
-extern struct ipv4_config ipv4_config;
#define IP_INC_STATS(net, field) SNMP_INC_STATS64((net)->mib.ip_statistics, field)
#define IP_INC_STATS_BH(net, field) SNMP_INC_STATS64_BH((net)->mib.ip_statistics, field)
#define IP_ADD_STATS(net, field, val) SNMP_ADD_STATS64((net)->mib.ip_statistics, field, val)
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index ee520cb..929a668 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -69,6 +69,7 @@ struct netns_ipv4 {
struct local_ports sysctl_local_ports;
int sysctl_tcp_ecn;
+ int sysctl_ip_no_pmtu_disc;
kgid_t sysctl_ping_group_range[2];
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index ef4f9df..6b1193e 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -126,9 +126,6 @@
static struct list_head inetsw[SOCK_MAX];
static DEFINE_SPINLOCK(inetsw_lock);
-struct ipv4_config ipv4_config;
-EXPORT_SYMBOL(ipv4_config);
-
/* New destruction routine */
void inet_sock_destruct(struct sock *sk)
@@ -342,7 +339,7 @@ lookup_protocol:
inet->hdrincl = 1;
}
- if (ipv4_config.no_pmtu_disc)
+ if (net->ipv4.sysctl_ip_no_pmtu_disc)
inet->pmtudisc = IP_PMTUDISC_DONT;
else
inet->pmtudisc = IP_PMTUDISC_WANT;
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 5c0e8bc..1a4ee84 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -705,7 +705,7 @@ static void icmp_unreach(struct sk_buff *skb)
case ICMP_PORT_UNREACH:
break;
case ICMP_FRAG_NEEDED:
- if (ipv4_config.no_pmtu_disc) {
+ if (net->ipv4.sysctl_ip_no_pmtu_disc) {
LIMIT_NETDEBUG(KERN_INFO pr_fmt("%pI4: fragmentation needed and DF set\n"),
&iph->daddr);
} else {
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 38c8ec9..d7b63a6 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -286,13 +286,6 @@ static struct ctl_table ipv4_table[] = {
.extra2 = &ip_ttl_max,
},
{
- .procname = "ip_no_pmtu_disc",
- .data = &ipv4_config.no_pmtu_disc,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec
- },
- {
.procname = "ip_nonlocal_bind",
.data = &sysctl_ip_nonlocal_bind,
.maxlen = sizeof(int),
@@ -831,6 +824,13 @@ static struct ctl_table ipv4_net_table[] = {
.mode = 0644,
.proc_handler = ipv4_local_port_range,
},
+ {
+ .procname = "ip_no_pmtu_disc",
+ .data = &init_net.ipv4.sysctl_ip_no_pmtu_disc,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
{ }
};
diff --git a/net/ipv4/xfrm4_state.c b/net/ipv4/xfrm4_state.c
index 0b2a064..542074c 100644
--- a/net/ipv4/xfrm4_state.c
+++ b/net/ipv4/xfrm4_state.c
@@ -16,7 +16,7 @@
static int xfrm4_init_flags(struct xfrm_state *x)
{
- if (ipv4_config.no_pmtu_disc)
+ if (xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc)
x->props.flags |= XFRM_STATE_NOPMTUDISC;
return 0;
}
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 027615a..5e76dfa 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -213,7 +213,7 @@ lookup_protocol:
inet->mc_list = NULL;
inet->rcv_tos = 0;
- if (ipv4_config.no_pmtu_disc)
+ if (net->ipv4.sysctl_ip_no_pmtu_disc)
inet->pmtudisc = IP_PMTUDISC_DONT;
else
inet->pmtudisc = IP_PMTUDISC_WANT;
--
1.8.3.1
--
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