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Date: Fri, 8 Oct 2010 13:16:59 +0200
From: Hans Schillstrom <hans.schillstrom@...csson.com>
To: lvs-devel@...r.kernel.org, netdev@...r.kernel.org,
netfilter-devel@...r.kernel.org
CC: horms@...ge.net.au, ja@....bg, wensong@...ux-vs.org,
daniel.lezcano@...e.fr
Subject: [RFC PATCH 4/9] ipvs network name space aware
This patch just contains ip_vs_core.c
Signed-off-by:Hans Schillstrom <hans.schillstrom@...csson.com>
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 0c043b6..4fdc5cb 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -52,7 +52,6 @@
#include <net/ip_vs.h>
-
EXPORT_SYMBOL(register_ip_vs_scheduler);
EXPORT_SYMBOL(unregister_ip_vs_scheduler);
EXPORT_SYMBOL(ip_vs_proto_name);
@@ -67,6 +66,8 @@ EXPORT_SYMBOL(ip_vs_conn_put);
EXPORT_SYMBOL(ip_vs_get_debug_level);
#endif
+/* netns cnt used for uniqueness */
+static atomic_t ipvs_netns_cnt = ATOMIC_INIT(0);
/* ID used in ICMP lookups */
#define icmp_id(icmph) (((icmph)->un).echo.id)
@@ -107,6 +108,8 @@ static inline void
ip_vs_in_stats(struct ip_vs_conn *cp, struct sk_buff *skb)
{
struct ip_vs_dest *dest = cp->dest;
+ struct net *net = dev_net(skb->dev);
+
if (dest && (dest->flags & IP_VS_DEST_F_AVAILABLE)) {
spin_lock(&dest->stats.lock);
dest->stats.ustats.inpkts++;
@@ -118,10 +121,10 @@ ip_vs_in_stats(struct ip_vs_conn *cp, struct sk_buff *skb)
dest->svc->stats.ustats.inbytes += skb->len;
spin_unlock(&dest->svc->stats.lock);
- spin_lock(&ip_vs_stats.lock);
- ip_vs_stats.ustats.inpkts++;
- ip_vs_stats.ustats.inbytes += skb->len;
- spin_unlock(&ip_vs_stats.lock);
+ spin_lock(&net->ipvs->ctl_stats->lock);
+ net->ipvs->ctl_stats->ustats.inpkts++;
+ net->ipvs->ctl_stats->ustats.inbytes += skb->len;
+ spin_unlock(&net->ipvs->ctl_stats->lock);
}
}
@@ -130,7 +133,10 @@ static inline void
ip_vs_out_stats(struct ip_vs_conn *cp, struct sk_buff *skb)
{
struct ip_vs_dest *dest = cp->dest;
+ struct net *net = dev_net(skb->dev);
+
if (dest && (dest->flags & IP_VS_DEST_F_AVAILABLE)) {
+ struct ip_vs_stats *ctl_stats = net->ipvs->ctl_stats;
spin_lock(&dest->stats.lock);
dest->stats.ustats.outpkts++;
dest->stats.ustats.outbytes += skb->len;
@@ -141,16 +147,16 @@ ip_vs_out_stats(struct ip_vs_conn *cp, struct sk_buff *skb)
dest->svc->stats.ustats.outbytes += skb->len;
spin_unlock(&dest->svc->stats.lock);
- spin_lock(&ip_vs_stats.lock);
- ip_vs_stats.ustats.outpkts++;
- ip_vs_stats.ustats.outbytes += skb->len;
- spin_unlock(&ip_vs_stats.lock);
+ spin_lock(&ctl_stats->lock);
+ net->ipvs->ctl_stats->ustats.outpkts++;
+ net->ipvs->ctl_stats->ustats.outbytes += skb->len;
+ spin_unlock(&ctl_stats->lock);
}
}
static inline void
-ip_vs_conn_stats(struct ip_vs_conn *cp, struct ip_vs_service *svc)
+ip_vs_conn_stats(struct net *net, struct ip_vs_conn *cp, struct ip_vs_service *svc)
{
spin_lock(&cp->dest->stats.lock);
cp->dest->stats.ustats.conns++;
@@ -160,9 +166,9 @@ ip_vs_conn_stats(struct ip_vs_conn *cp, struct ip_vs_service *svc)
svc->stats.ustats.conns++;
spin_unlock(&svc->stats.lock);
- spin_lock(&ip_vs_stats.lock);
- ip_vs_stats.ustats.conns++;
- spin_unlock(&ip_vs_stats.lock);
+ spin_lock(&net->ipvs->ctl_stats->lock);
+ net->ipvs->ctl_stats->ustats.conns++;
+ spin_unlock(&net->ipvs->ctl_stats->lock);
}
@@ -197,6 +203,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
__be16 flags;
union nf_inet_addr snet; /* source network of the client,
after masking */
+ struct net *net = dev_net(skb->dev);
ip_vs_fill_iphdr(svc->af, skb_network_header(skb), &iph);
@@ -230,13 +237,13 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
if (ports[1] == svc->port) {
/* Check if a template already exists */
if (svc->port != FTPPORT)
- ct = ip_vs_ct_in_get(svc->af, iph.protocol, &snet, 0,
- &iph.daddr, ports[1]);
+ ct = ip_vs_ct_in_get(net, svc->af, iph.protocol, &snet,
+ 0, &iph.daddr, ports[1]);
else
- ct = ip_vs_ct_in_get(svc->af, iph.protocol, &snet, 0,
- &iph.daddr, 0);
+ ct = ip_vs_ct_in_get(net, svc->af, iph.protocol, &snet,
+ 0, &iph.daddr, 0);
- if (!ct || !ip_vs_check_template(ct)) {
+ if (!ct || !ip_vs_check_template(net, ct)) {
/*
* No template found or the dest of the connection
* template is not available.
@@ -254,7 +261,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
* for ftp service.
*/
if (svc->port != FTPPORT)
- ct = ip_vs_conn_new(svc->af, iph.protocol,
+ ct = ip_vs_conn_new(net, svc->af, iph.protocol,
&snet, 0,
&iph.daddr,
ports[1],
@@ -262,7 +269,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
IP_VS_CONN_F_TEMPLATE,
dest);
else
- ct = ip_vs_conn_new(svc->af, iph.protocol,
+ ct = ip_vs_conn_new(net, svc->af, iph.protocol,
&snet, 0,
&iph.daddr, 0,
&dest->addr, 0,
@@ -289,13 +296,13 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
.ip = htonl(svc->fwmark)
};
- ct = ip_vs_ct_in_get(svc->af, IPPROTO_IP, &snet, 0,
- &fwmark, 0);
+ ct = ip_vs_ct_in_get(net, svc->af, IPPROTO_IP, &snet,
+ 0, &fwmark, 0);
} else
- ct = ip_vs_ct_in_get(svc->af, iph.protocol, &snet, 0,
- &iph.daddr, 0);
+ ct = ip_vs_ct_in_get(net, svc->af, iph.protocol, &snet,
+ 0, &iph.daddr, 0);
- if (!ct || !ip_vs_check_template(ct)) {
+ if (!ct || !ip_vs_check_template(net, ct)) {
/*
* If it is not persistent port zero, return NULL,
* otherwise create a connection template.
@@ -317,14 +324,14 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
.ip = htonl(svc->fwmark)
};
- ct = ip_vs_conn_new(svc->af, IPPROTO_IP,
+ ct = ip_vs_conn_new(net, svc->af, IPPROTO_IP,
&snet, 0,
&fwmark, 0,
&dest->addr, 0,
IP_VS_CONN_F_TEMPLATE,
dest);
} else
- ct = ip_vs_conn_new(svc->af, iph.protocol,
+ ct = ip_vs_conn_new(net, svc->af, iph.protocol,
&snet, 0,
&iph.daddr, 0,
&dest->addr, 0,
@@ -348,7 +355,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
/*
* Create a new connection according to the template
*/
- cp = ip_vs_conn_new(svc->af, iph.protocol,
+ cp = ip_vs_conn_new(net, svc->af, iph.protocol,
&iph.saddr, ports[0],
&iph.daddr, ports[1],
&dest->addr, dport,
@@ -365,7 +372,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
ip_vs_control_add(cp, ct);
ip_vs_conn_put(ct);
- ip_vs_conn_stats(cp, svc);
+ ip_vs_conn_stats(net, cp, svc);
return cp;
}
@@ -383,6 +390,7 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
struct ip_vs_iphdr iph;
struct ip_vs_dest *dest;
__be16 _ports[2], *pptr, flags;
+ struct net *net = dev_net(skb->dev);
ip_vs_fill_iphdr(svc->af, skb_network_header(skb), &iph);
pptr = skb_header_pointer(skb, iph.len, sizeof(_ports), _ports);
@@ -415,11 +423,10 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
flags = (svc->flags & IP_VS_SVC_F_ONEPACKET
&& iph.protocol == IPPROTO_UDP)?
IP_VS_CONN_F_ONE_PACKET : 0;
-
/*
* Create a connection entry.
*/
- cp = ip_vs_conn_new(svc->af, iph.protocol,
+ cp = ip_vs_conn_new(net, svc->af, iph.protocol,
&iph.saddr, pptr[0],
&iph.daddr, pptr[1],
&dest->addr, dest->port ? dest->port : pptr[1],
@@ -436,7 +443,7 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
IP_VS_DBG_ADDR(svc->af, &cp->daddr), ntohs(cp->dport),
cp->flags, atomic_read(&cp->refcnt));
- ip_vs_conn_stats(cp, svc);
+ ip_vs_conn_stats(net, cp, svc);
return cp;
}
@@ -452,6 +459,8 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
__be16 _ports[2], *pptr;
struct ip_vs_iphdr iph;
int unicast;
+ struct net *net = dev_net(skb->dev);
+
ip_vs_fill_iphdr(svc->af, skb_network_header(skb), &iph);
pptr = skb_header_pointer(skb, iph.len, sizeof(_ports), _ports);
@@ -465,12 +474,12 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
unicast = ipv6_addr_type(&iph.daddr.in6) & IPV6_ADDR_UNICAST;
else
#endif
- unicast = (inet_addr_type(&init_net, iph.daddr.ip) == RTN_UNICAST);
+ unicast = (inet_addr_type(net, iph.daddr.ip) == RTN_UNICAST);
/* if it is fwmark-based service, the cache_bypass sysctl is up
and the destination is a non-local unicast, then create
a cache_bypass connection entry */
- if (sysctl_ip_vs_cache_bypass && svc->fwmark && unicast) {
+ if (net->ipvs->sysctl_cache_bypass && svc->fwmark && unicast) {
int ret, cs;
struct ip_vs_conn *cp;
__u16 flags = (svc->flags & IP_VS_SVC_F_ONEPACKET &&
@@ -482,7 +491,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
/* create a new connection entry */
IP_VS_DBG(6, "%s(): create a cache_bypass entry\n", __func__);
- cp = ip_vs_conn_new(svc->af, iph.protocol,
+ cp = ip_vs_conn_new(net, svc->af, iph.protocol,
&iph.saddr, pptr[0],
&iph.daddr, pptr[1],
&daddr, 0,
@@ -954,6 +963,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb,
struct ip_vs_protocol *pp;
struct ip_vs_conn *cp;
int af;
+ struct net *net = dev_net(skb->dev);
EnterFunction(11);
@@ -1013,7 +1023,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb,
cp = pp->conn_out_get(af, skb, pp, &iph, iph.len, 0);
if (unlikely(!cp)) {
- if (sysctl_ip_vs_nat_icmp_send &&
+ if (net->ipvs->sysctl_nat_icmp_send &&
(pp->protocol == IPPROTO_TCP ||
pp->protocol == IPPROTO_UDP ||
pp->protocol == IPPROTO_SCTP)) {
@@ -1023,7 +1033,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb,
sizeof(_ports), _ports);
if (pptr == NULL)
return NF_ACCEPT; /* Not for me */
- if (ip_vs_lookup_real_service(af, iph.protocol,
+ if (ip_vs_lookup_real_service(net, af, iph.protocol,
&iph.saddr,
pptr[0])) {
/*
@@ -1283,6 +1293,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb,
struct ip_vs_protocol *pp;
struct ip_vs_conn *cp;
int ret, restart, af, pkts;
+ struct net *net = dev_net(skb->dev);
af = (skb->protocol == htons(ETH_P_IP)) ? AF_INET : AF_INET6;
@@ -1354,7 +1365,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb,
if (cp->dest && !(cp->dest->flags & IP_VS_DEST_F_AVAILABLE)) {
/* the destination server is not available */
- if (sysctl_ip_vs_expire_nodest_conn) {
+ if (net->ipvs->sysctl_expire_nodest_conn) {
/* try to expire the connection immediately */
ip_vs_conn_expire_now(cp);
}
@@ -1381,33 +1392,33 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb,
* encorage the standby servers to update the connections timeout
*/
pkts = atomic_add_return(1, &cp->in_pkts);
- if (af == AF_INET && (ip_vs_sync_state & IP_VS_STATE_MASTER) &&
+ if (af == AF_INET && (net->ipvs->sync_state & IP_VS_STATE_MASTER) &&
cp->protocol == IPPROTO_SCTP) {
if ((cp->state == IP_VS_SCTP_S_ESTABLISHED &&
- (pkts % sysctl_ip_vs_sync_threshold[1]
- == sysctl_ip_vs_sync_threshold[0])) ||
+ (pkts % net->ipvs->sysctl_sync_threshold[1]
+ == net->ipvs->sysctl_sync_threshold[0])) ||
(cp->old_state != cp->state &&
((cp->state == IP_VS_SCTP_S_CLOSED) ||
(cp->state == IP_VS_SCTP_S_SHUT_ACK_CLI) ||
(cp->state == IP_VS_SCTP_S_SHUT_ACK_SER)))) {
- ip_vs_sync_conn(cp);
+ ip_vs_sync_conn(net, cp);
goto out;
}
}
/* Keep this block last: TCP and others with pp->num_states <= 1 */
else if (af == AF_INET &&
- (ip_vs_sync_state & IP_VS_STATE_MASTER) &&
+ (net->ipvs->sync_state & IP_VS_STATE_MASTER) &&
(((cp->protocol != IPPROTO_TCP ||
cp->state == IP_VS_TCP_S_ESTABLISHED) &&
- (pkts % sysctl_ip_vs_sync_threshold[1]
- == sysctl_ip_vs_sync_threshold[0])) ||
+ (pkts % net->ipvs->sysctl_sync_threshold[1]
+ == net->ipvs->sysctl_sync_threshold[0])) ||
((cp->protocol == IPPROTO_TCP) && (cp->old_state != cp->state) &&
((cp->state == IP_VS_TCP_S_FIN_WAIT) ||
(cp->state == IP_VS_TCP_S_CLOSE) ||
(cp->state == IP_VS_TCP_S_CLOSE_WAIT) ||
(cp->state == IP_VS_TCP_S_TIME_WAIT)))))
- ip_vs_sync_conn(cp);
+ ip_vs_sync_conn(net,cp);
out:
cp->old_state = cp->state;
@@ -1512,7 +1523,37 @@ static struct nf_hook_ops ip_vs_ops[] __read_mostly = {
},
#endif
};
+/*
+ * Initialize IP Virtual Server netns mem.
+ */
+static int __net_init __ip_vs_init(struct net *net)
+{
+ struct netns_ipvs *ipvs = 0;
+ ipvs = kzalloc(sizeof(struct netns_ipvs), GFP_ATOMIC);
+ if( ipvs == NULL ) {
+ pr_err("%s(): no memory.\n", __func__);
+ return -ENOMEM;
+ }
+ ipvs->inc = atomic_read(&ipvs_netns_cnt);
+ atomic_inc(&ipvs_netns_cnt);
+ IP_VS_DBG(10, "Creating new netns *net=%p *ipvs=%p size=%lu\n",
+ net, ipvs, sizeof(struct netns_ipvs));
+ net->ipvs = ipvs;
+
+ return 0;
+}
+
+static void __net_exit __ip_vs_cleanup(struct net *net)
+{
+ IP_VS_DBG(10, "ipvs netns %p released\n", net);
+ kfree(net->ipvs);
+}
+
+static struct pernet_operations ipvs_core_ops = {
+ .init = __ip_vs_init,
+ .exit = __ip_vs_cleanup,
+};
/*
* Initialize IP Virtual Server
@@ -1521,8 +1562,11 @@ static int __init ip_vs_init(void)
{
int ret;
- ip_vs_estimator_init();
+ ret = register_pernet_subsys(&ipvs_core_ops); /* Alloc ip_vs struct */
+ if( ret < 0 )
+ return ret;
+ ip_vs_estimator_init();
ret = ip_vs_control_init();
if (ret < 0) {
pr_err("can't setup control.\n");
@@ -1530,28 +1574,30 @@ static int __init ip_vs_init(void)
}
ip_vs_protocol_init();
-
ret = ip_vs_app_init();
if (ret < 0) {
pr_err("can't setup application helper.\n");
goto cleanup_protocol;
}
-
ret = ip_vs_conn_init();
if (ret < 0) {
pr_err("can't setup connection table.\n");
goto cleanup_app;
}
-
+ ret = ip_vs_sync_init();
+ if (ret < 0) {
+ pr_err("can't setup sync data.\n");
+ goto cleanup_conn;
+ }
ret = nf_register_hooks(ip_vs_ops, ARRAY_SIZE(ip_vs_ops));
if (ret < 0) {
pr_err("can't register hooks.\n");
- goto cleanup_conn;
+ goto cleanup_sync;
}
-
pr_info("ipvs loaded.\n");
return ret;
-
+ cleanup_sync:
+ ip_vs_sync_cleanup();
cleanup_conn:
ip_vs_conn_cleanup();
cleanup_app:
@@ -1561,17 +1607,20 @@ static int __init ip_vs_init(void)
ip_vs_control_cleanup();
cleanup_estimator:
ip_vs_estimator_cleanup();
+ unregister_pernet_subsys(&ipvs_core_ops); /* free ip_vs struct */
return ret;
}
static void __exit ip_vs_cleanup(void)
{
nf_unregister_hooks(ip_vs_ops, ARRAY_SIZE(ip_vs_ops));
+ ip_vs_sync_cleanup();
ip_vs_conn_cleanup();
ip_vs_app_cleanup();
ip_vs_protocol_cleanup();
ip_vs_control_cleanup();
ip_vs_estimator_cleanup();
+ unregister_pernet_subsys(&ipvs_core_ops); /* free ip_vs struct */
pr_info("ipvs unloaded.\n");
}
--
Regards
Hans Schillstrom <hans.schillstrom@...csson.com>
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