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Message-ID: <201010081316.54676.hans.schillstrom@ericsson.com>
Date: Fri, 8 Oct 2010 13:16:53 +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 2/9] ipvs network name space aware
This part contains the include files
where include/net/netns/ip_vs.h is new and contains all moved vars.
SUMMARY
include/net/ip_vs.h | 136 ++++---
include/net/net_namespace.h | 2 +
include/net/netns/ip_vs.h | 112 +++++
Signed-off-by:Hans Schillstrom <hans.schillstrom@...csson.com>
---
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index b17f863..b40a0fb 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -288,6 +288,7 @@ struct iphdr;
struct ip_vs_conn;
struct ip_vs_app;
struct sk_buff;
+struct ip_vs_proto_data;
struct ip_vs_protocol {
struct ip_vs_protocol *next;
@@ -302,6 +303,10 @@ struct ip_vs_protocol {
void (*exit)(struct ip_vs_protocol *pp);
+ void (*init_netns)(struct net *net, struct ip_vs_proto_data *pd);
+
+ void (*exit_netns)(struct net *net, struct ip_vs_proto_data *pd);
+
int (*conn_schedule)(int af, struct sk_buff *skb,
struct ip_vs_protocol *pp,
int *verdict, struct ip_vs_conn **cpp);
@@ -337,11 +342,11 @@ struct ip_vs_protocol {
const struct sk_buff *skb,
struct ip_vs_protocol *pp);
- int (*register_app)(struct ip_vs_app *inc);
+ int (*register_app)(struct net *net, struct ip_vs_app *inc);
- void (*unregister_app)(struct ip_vs_app *inc);
+ void (*unregister_app)(struct net *net, struct ip_vs_app *inc);
- int (*app_conn_bind)(struct ip_vs_conn *cp);
+ int (*app_conn_bind)(struct net *net, struct ip_vs_conn *cp);
void (*debug_packet)(struct ip_vs_protocol *pp,
const struct sk_buff *skb,
@@ -350,10 +355,24 @@ struct ip_vs_protocol {
void (*timeout_change)(struct ip_vs_protocol *pp, int flags);
- int (*set_state_timeout)(struct ip_vs_protocol *pp, char *sname, int to);
+ /*
+ int (*set_state_timeout)(struct ip_vs_protocol *pp,
+ char *sname,
+ int to); Not used -Hans S */
+};
+/*
+ * protocol data per netns
+ */
+struct ip_vs_proto_data {
+ struct ip_vs_proto_data *next;
+ struct ip_vs_protocol *pp;
+ int *timeout_table; /* protocol timeout table */
+ atomic_t appcnt; /* counter of proto app incs. */
};
-extern struct ip_vs_protocol * ip_vs_proto_get(unsigned short proto);
+extern struct ip_vs_protocol * ip_vs_proto_get(unsigned short proto);
+extern struct ip_vs_proto_data * ip_vs_proto_data_get(struct net *net,
+ unsigned short proto);
/*
* IP_VS structure allocated for each dynamically scheduled connection
@@ -398,6 +417,8 @@ struct ip_vs_conn {
int (*packet_xmit)(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp);
+ struct net *net; /* netns ptr needed in timer */
+
/* Note: we can group the following members into a structure,
in order to save more space, and the following members are
only used in VS/NAT anyway */
@@ -628,29 +649,32 @@ enum {
IP_VS_DIR_LAST,
};
-extern struct ip_vs_conn *ip_vs_conn_in_get
-(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
- const union nf_inet_addr *d_addr, __be16 d_port);
+extern struct ip_vs_conn *
+ip_vs_conn_in_get(struct net *net, int af, int protocol,
+ const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port);
-extern struct ip_vs_conn *ip_vs_ct_in_get
-(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
- const union nf_inet_addr *d_addr, __be16 d_port);
+extern struct ip_vs_conn *
+ip_vs_ct_in_get(struct net *net, int af, int protocol,
+ const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port);
-struct ip_vs_conn * ip_vs_conn_in_get_proto(int af, const struct sk_buff *skb,
- struct ip_vs_protocol *pp,
- const struct ip_vs_iphdr *iph,
- unsigned int proto_off,
- int inverse);
+struct ip_vs_conn *
+ip_vs_conn_in_get_proto(int af, const struct sk_buff *skb,
+ struct ip_vs_protocol *pp,
+ const struct ip_vs_iphdr *iph,
+ unsigned int proto_off, int inverse);
-extern struct ip_vs_conn *ip_vs_conn_out_get
-(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
- const union nf_inet_addr *d_addr, __be16 d_port);
+extern struct ip_vs_conn *
+ip_vs_conn_out_get(struct net *net,int af, int protocol,
+ const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port);
-struct ip_vs_conn * ip_vs_conn_out_get_proto(int af, const struct sk_buff *skb,
- struct ip_vs_protocol *pp,
- const struct ip_vs_iphdr *iph,
- unsigned int proto_off,
- int inverse);
+struct ip_vs_conn *
+ip_vs_conn_out_get_proto(int af, const struct sk_buff *skb,
+ struct ip_vs_protocol *pp,
+ const struct ip_vs_iphdr *iph,
+ unsigned int proto_off, int inverse);
/* put back the conn without restarting its timer */
static inline void __ip_vs_conn_put(struct ip_vs_conn *cp)
@@ -658,20 +682,22 @@ static inline void __ip_vs_conn_put(struct ip_vs_conn *cp)
atomic_dec(&cp->refcnt);
}
extern void ip_vs_conn_put(struct ip_vs_conn *cp);
-extern void ip_vs_conn_fill_cport(struct ip_vs_conn *cp, __be16 cport);
+extern void
+ip_vs_conn_fill_cport(struct net *net, struct ip_vs_conn *cp, __be16 cport);
extern struct ip_vs_conn *
-ip_vs_conn_new(int af, int proto, const union nf_inet_addr *caddr, __be16 cport,
+ip_vs_conn_new(struct net *net, int af, int proto,
+ const union nf_inet_addr *caddr, __be16 cport,
const union nf_inet_addr *vaddr, __be16 vport,
- const union nf_inet_addr *daddr, __be16 dport, unsigned flags,
- struct ip_vs_dest *dest);
+ const union nf_inet_addr *daddr, __be16 dport,
+ unsigned flags, struct ip_vs_dest *dest);
extern void ip_vs_conn_expire_now(struct ip_vs_conn *cp);
extern const char * ip_vs_state_name(__u16 proto, int state);
-extern void ip_vs_tcp_conn_listen(struct ip_vs_conn *cp);
-extern int ip_vs_check_template(struct ip_vs_conn *ct);
-extern void ip_vs_random_dropentry(void);
+extern void ip_vs_tcp_conn_listen(struct net *net, struct ip_vs_conn *cp);
+extern int ip_vs_check_template(struct net *net, struct ip_vs_conn *ct);
+extern void ip_vs_random_dropentry(struct net *net);
extern int ip_vs_conn_init(void);
extern void ip_vs_conn_cleanup(void);
@@ -741,12 +767,15 @@ ip_vs_control_add(struct ip_vs_conn *cp, struct ip_vs_conn *ctl_cp)
* (from ip_vs_app.c)
*/
#define IP_VS_APP_MAX_PORTS 8
-extern int register_ip_vs_app(struct ip_vs_app *app);
-extern void unregister_ip_vs_app(struct ip_vs_app *app);
-extern int ip_vs_bind_app(struct ip_vs_conn *cp, struct ip_vs_protocol *pp);
+extern int register_ip_vs_app(struct net *net, struct ip_vs_app *app);
+extern void unregister_ip_vs_app(struct net *net, struct ip_vs_app *app);
+extern int ip_vs_bind_app(struct net *net, struct ip_vs_conn *cp,
+ struct ip_vs_protocol *pp);
extern void ip_vs_unbind_app(struct ip_vs_conn *cp);
-extern int
-register_ip_vs_app_inc(struct ip_vs_app *app, __u16 proto, __u16 port);
+extern int register_ip_vs_app_inc(struct net *net,
+ struct ip_vs_app *app,
+ __u16 proto,
+ __u16 port);
extern int ip_vs_app_inc_get(struct ip_vs_app *inc);
extern void ip_vs_app_inc_put(struct ip_vs_app *inc);
@@ -762,7 +791,7 @@ extern void ip_vs_app_cleanup(void);
extern int ip_vs_protocol_init(void);
extern void ip_vs_protocol_cleanup(void);
extern void ip_vs_protocol_timeout_change(int flags);
-extern int *ip_vs_create_timeout_table(int *table, int size);
+extern int *ip_vs_create_timeout_table(const int *table, int size);
extern int
ip_vs_set_state_timeout(int *table, int num, const char *const *names,
const char *name, int to);
@@ -806,7 +835,7 @@ extern struct ip_vs_stats ip_vs_stats;
extern const struct ctl_path net_vs_ctl_path[];
extern struct ip_vs_service *
-ip_vs_service_get(int af, __u32 fwmark, __u16 protocol,
+ip_vs_service_get(struct net *net, int af, __u32 fwmark, __u16 protocol,
const union nf_inet_addr *vaddr, __be16 vport);
static inline void ip_vs_service_put(struct ip_vs_service *svc)
@@ -815,7 +844,7 @@ static inline void ip_vs_service_put(struct ip_vs_service *svc)
}
extern struct ip_vs_dest *
-ip_vs_lookup_real_service(int af, __u16 protocol,
+ip_vs_lookup_real_service(struct net *net, int af, __u16 protocol,
const union nf_inet_addr *daddr, __be16 dport);
extern int ip_vs_use_count_inc(void);
@@ -823,23 +852,22 @@ extern void ip_vs_use_count_dec(void);
extern int ip_vs_control_init(void);
extern void ip_vs_control_cleanup(void);
extern struct ip_vs_dest *
-ip_vs_find_dest(int af, const union nf_inet_addr *daddr, __be16 dport,
+ip_vs_find_dest(struct net *net, int af,
+ const union nf_inet_addr *daddr, __be16 dport,
const union nf_inet_addr *vaddr, __be16 vport, __u16 protocol);
-extern struct ip_vs_dest *ip_vs_try_bind_dest(struct ip_vs_conn *cp);
-
+extern struct ip_vs_dest *ip_vs_try_bind_dest(struct net *net,
+ struct ip_vs_conn *cp);
/*
* IPVS sync daemon data and function prototypes
* (from ip_vs_sync.c)
*/
-extern volatile int ip_vs_sync_state;
-extern volatile int ip_vs_master_syncid;
-extern volatile int ip_vs_backup_syncid;
-extern char ip_vs_master_mcast_ifn[IP_VS_IFNAME_MAXLEN];
-extern char ip_vs_backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
-extern int start_sync_thread(int state, char *mcast_ifn, __u8 syncid);
-extern int stop_sync_thread(int state);
-extern void ip_vs_sync_conn(struct ip_vs_conn *cp);
+extern int start_sync_thread(struct net *net, int state, char *mcast_ifn,
+ __u8 syncid);
+extern int stop_sync_thread(struct net *net, int state);
+extern void ip_vs_sync_conn(struct net *net, struct ip_vs_conn *cp);
+extern int ip_vs_sync_init(void);
+extern void ip_vs_sync_cleanup(void);
/*
@@ -847,8 +875,8 @@ extern void ip_vs_sync_conn(struct ip_vs_conn *cp);
*/
extern int ip_vs_estimator_init(void);
extern void ip_vs_estimator_cleanup(void);
-extern void ip_vs_new_estimator(struct ip_vs_stats *stats);
-extern void ip_vs_kill_estimator(struct ip_vs_stats *stats);
+extern void ip_vs_new_estimator(struct net *net, struct ip_vs_stats *stats);
+extern void ip_vs_kill_estimator(struct net *net, struct ip_vs_stats *stats);
extern void ip_vs_zero_estimator(struct ip_vs_stats *stats);
/*
@@ -864,8 +892,8 @@ extern int ip_vs_tunnel_xmit
(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp);
extern int ip_vs_dr_xmit
(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp);
-extern int ip_vs_icmp_xmit
-(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp, int offset);
+extern int ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
+ struct ip_vs_protocol *pp, int offset);
extern void ip_vs_dst_reset(struct ip_vs_dest *dest);
#ifdef CONFIG_IP_VS_IPV6
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index bd10a79..b59cdc5 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -15,6 +15,7 @@
#include <net/netns/ipv4.h>
#include <net/netns/ipv6.h>
#include <net/netns/dccp.h>
+#include <net/netns/ip_vs.h>
#include <net/netns/x_tables.h>
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
#include <net/netns/conntrack.h>
@@ -91,6 +92,7 @@ struct net {
struct sk_buff_head wext_nlevents;
#endif
struct net_generic *gen;
+ struct netns_ipvs *ipvs;
};
diff --git a/include/net/netns/ip_vs.h b/include/net/netns/ip_vs.h
new file mode 100644
index 0000000..540ac90
--- /dev/null
+++ b/include/net/netns/ip_vs.h
@@ -0,0 +1,112 @@
+#ifndef __NETNS_IP_VS_H_
+#define __NETNS_IP_VS_H_
+
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/list_nulls.h>
+#include <linux/ip_vs.h>
+#include <asm/atomic.h>
+#include <linux/in.h>
+
+struct ip_vs_stats;
+struct ip_vs_sync_buff;
+struct ctl_table_header;
+
+struct netns_ipvs {
+ int inc; /* incarnation */
+ /* ip_vs_app */
+ struct list_head app_list;
+ struct mutex app_mutex;
+ struct lock_class_key app_key; /* Grrr, for mutex debuging */
+ /* ip_vs_conn */
+ unsigned char conn_cname[20]; /* Connection hash name */
+ struct list_head *conn_tab; /* Connection hash: for in and output packets */
+ struct kmem_cache *conn_cachep; /* SLAB cache for IPVS connections */
+ atomic_t conn_count; /* counter for current IPVS connections */
+ atomic_t conn_no_cport_cnt; /* counter for no client port connections */
+ unsigned int conn_rnd; /* random value for IPVS connection hash */
+ /* ip_vs_ctl */
+ struct ip_vs_stats *ctl_stats; /* Statistics & estimator */
+ /* Hash table: for virtual service lookups */
+ #define IP_VS_SVC_TAB_BITS 8
+ #define IP_VS_SVC_TAB_SIZE (1 << IP_VS_SVC_TAB_BITS)
+ #define IP_VS_SVC_TAB_MASK (IP_VS_SVC_TAB_SIZE - 1)
+ /* the service table hashed by <protocol, addr, port> */
+ struct list_head ctl_svc_table[IP_VS_SVC_TAB_SIZE];
+ /* the service table hashed by fwmark */
+ struct list_head ctl_fwm_table[IP_VS_SVC_TAB_SIZE];
+ /* Hash table: for real service lookups */
+ #define IP_VS_RTAB_BITS 4
+ #define IP_VS_RTAB_SIZE (1 << IP_VS_RTAB_BITS)
+ #define IP_VS_RTAB_MASK (IP_VS_RTAB_SIZE - 1)
+ struct list_head ctl_rtable[IP_VS_RTAB_SIZE]; /* Hash table: for real service */
+ struct list_head ctl_dest_trash; /* Trash for destinations */
+ atomic_t ctl_ftpsvc_counter;
+ atomic_t ctl_nullsvc_counter;
+ /* sys-ctl struct */
+ struct ctl_table_header *sysctl_hdr;
+ struct ctl_table *sysctl_tbl;
+ /* sysctl variables */
+ int sysctl_amemthresh;
+ int sysctl_am_droprate;
+ int sysctl_drop_entry;
+ int sysctl_drop_packet;
+ int sysctl_secure_tcp;
+ int sysctl_cache_bypass;
+ int sysctl_expire_nodest_conn;
+ int sysctl_expire_quiescent_template;
+ int sysctl_sync_threshold[2];
+ int sysctl_nat_icmp_send;
+ /* ip_vs_proto */
+ #define IP_VS_PROTO_TAB_SIZE 32 /* must be power of 2 */
+ struct ip_vs_proto_data *proto_data_table[IP_VS_PROTO_TAB_SIZE];
+ /* ip_vs_proto_tcp */
+#ifdef CONFIG_IP_VS_PROTO_TCP
+ #define TCP_APP_TAB_BITS 4
+ #define TCP_APP_TAB_SIZE (1 << TCP_APP_TAB_BITS)
+ #define TCP_APP_TAB_MASK (TCP_APP_TAB_SIZE - 1)
+ struct list_head tcp_apps[TCP_APP_TAB_SIZE];
+ spinlock_t tcp_app_lock;
+#endif
+ /* ip_vs_proto_udp */
+#ifdef CONFIG_IP_VS_PROTO_UDP
+ #define UDP_APP_TAB_BITS 4
+ #define UDP_APP_TAB_SIZE (1 << UDP_APP_TAB_BITS)
+ #define UDP_APP_TAB_MASK (UDP_APP_TAB_SIZE - 1)
+ struct list_head udp_apps[UDP_APP_TAB_SIZE];
+ spinlock_t udp_app_lock;
+#endif
+ /* ip_vs_proto_sctp */
+ #define SCTP_APP_TAB_BITS 4
+ #define SCTP_APP_TAB_SIZE (1 << SCTP_APP_TAB_BITS)
+ #define SCTP_APP_TAB_MASK (SCTP_APP_TAB_SIZE - 1)
+ /* Hash table for SCTP application incarnations */
+ struct list_head sctp_apps[SCTP_APP_TAB_SIZE];
+ spinlock_t sctp_app_lock;
+
+ /* ip_vs_est */
+ struct list_head est_list; /* estimator list */
+ spinlock_t est_lock;
+ /* ip_vs_sync */
+ struct list_head sync_queue;
+ spinlock_t sync_lock;
+ struct ip_vs_sync_buff *sync_buff;
+ spinlock_t sync_buff_lock;
+ struct sockaddr_in sync_mcast_addr;
+ /* sync daemon tasks */
+ struct task_struct *sync_master_thread;
+ struct task_struct *sync_backup_thread;
+ /* the maximum length of sync (sending/receiving) message */
+ int sync_send_mesg_maxlen;
+ int sync_recv_mesg_maxlen;
+
+ volatile int sync_state;
+ volatile int master_syncid;
+ volatile int backup_syncid;
+ /* multicast interface name */
+ char master_mcast_ifn[IP_VS_IFNAME_MAXLEN];
+ char backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
+
+};
+
+#endif /*__NETNS_IP_VS_H_*/
--
Regards
Hans Schillstrom <hans.schillstrom@...csson.com>
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