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-rw-r--r--net/ipv4/ipvs/ip_vs_app.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_conn.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_core.c5
-rw-r--r--net/ipv4/ipvs/ip_vs_ctl.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_dh.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_est.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_ftp.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_lblc.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_lblcr.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_lc.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_nq.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_proto.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_proto_ah.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_proto_esp.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_proto_tcp.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_proto_udp.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_rr.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_sched.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_sed.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_sh.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_sync.c433
-rw-r--r--net/ipv4/ipvs/ip_vs_wlc.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_wrr.c2
-rw-r--r--net/ipv4/ipvs/ip_vs_xmit.c2
24 files changed, 174 insertions, 308 deletions
diff --git a/net/ipv4/ipvs/ip_vs_app.c b/net/ipv4/ipvs/ip_vs_app.c
index 535abe0c45e7..1f1897a1a702 100644
--- a/net/ipv4/ipvs/ip_vs_app.c
+++ b/net/ipv4/ipvs/ip_vs_app.c
@@ -1,8 +1,6 @@
/*
* ip_vs_app.c: Application module support for IPVS
*
- * Version: $Id: ip_vs_app.c,v 1.17 2003/03/22 06:31:21 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
*
* This program is free software; you can redistribute it and/or
diff --git a/net/ipv4/ipvs/ip_vs_conn.c b/net/ipv4/ipvs/ip_vs_conn.c
index 65f1ba112752..f8bdae47a77f 100644
--- a/net/ipv4/ipvs/ip_vs_conn.c
+++ b/net/ipv4/ipvs/ip_vs_conn.c
@@ -5,8 +5,6 @@
* high-performance and highly available server based on a
* cluster of servers.
*
- * Version: $Id: ip_vs_conn.c,v 1.31 2003/04/18 09:03:16 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Peter Kese <peter.kese@ijs.si>
* Julian Anastasov <ja@ssi.bg>
diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index 963981a9d501..a7879eafc3b5 100644
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -5,8 +5,6 @@
* high-performance and highly available server based on a
* cluster of servers.
*
- * Version: $Id: ip_vs_core.c,v 1.34 2003/05/10 03:05:23 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Peter Kese <peter.kese@ijs.si>
* Julian Anastasov <ja@ssi.bg>
@@ -993,7 +991,8 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb,
== sysctl_ip_vs_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);
cp->old_state = cp->state;
diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c
index 94c5767c8e01..9a5ace0b4dd6 100644
--- a/net/ipv4/ipvs/ip_vs_ctl.c
+++ b/net/ipv4/ipvs/ip_vs_ctl.c
@@ -5,8 +5,6 @@
* high-performance and highly available server based on a
* cluster of servers.
*
- * Version: $Id: ip_vs_ctl.c,v 1.36 2003/06/08 09:31:19 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Peter Kese <peter.kese@ijs.si>
* Julian Anastasov <ja@ssi.bg>
diff --git a/net/ipv4/ipvs/ip_vs_dh.c b/net/ipv4/ipvs/ip_vs_dh.c
index dcf5d46aaa5e..8afc1503ed20 100644
--- a/net/ipv4/ipvs/ip_vs_dh.c
+++ b/net/ipv4/ipvs/ip_vs_dh.c
@@ -1,8 +1,6 @@
/*
* IPVS: Destination Hashing scheduling module
*
- * Version: $Id: ip_vs_dh.c,v 1.5 2002/09/15 08:14:08 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@gnuchina.org>
*
* Inspired by the consistent hashing scheduler patch from
diff --git a/net/ipv4/ipvs/ip_vs_est.c b/net/ipv4/ipvs/ip_vs_est.c
index dfa0d713c801..bc04eedd6dbb 100644
--- a/net/ipv4/ipvs/ip_vs_est.c
+++ b/net/ipv4/ipvs/ip_vs_est.c
@@ -1,8 +1,6 @@
/*
* ip_vs_est.c: simple rate estimator for IPVS
*
- * Version: $Id: ip_vs_est.c,v 1.4 2002/11/30 01:50:35 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
*
* This program is free software; you can redistribute it and/or
diff --git a/net/ipv4/ipvs/ip_vs_ftp.c b/net/ipv4/ipvs/ip_vs_ftp.c
index 59aa166b7678..c1c758e4f733 100644
--- a/net/ipv4/ipvs/ip_vs_ftp.c
+++ b/net/ipv4/ipvs/ip_vs_ftp.c
@@ -1,8 +1,6 @@
/*
* ip_vs_ftp.c: IPVS ftp application module
*
- * Version: $Id: ip_vs_ftp.c,v 1.13 2002/09/15 08:14:08 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
*
* Changes:
diff --git a/net/ipv4/ipvs/ip_vs_lblc.c b/net/ipv4/ipvs/ip_vs_lblc.c
index 3888642706ad..0efa3db4b180 100644
--- a/net/ipv4/ipvs/ip_vs_lblc.c
+++ b/net/ipv4/ipvs/ip_vs_lblc.c
@@ -1,8 +1,6 @@
/*
* IPVS: Locality-Based Least-Connection scheduling module
*
- * Version: $Id: ip_vs_lblc.c,v 1.10 2002/09/15 08:14:08 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@gnuchina.org>
*
* This program is free software; you can redistribute it and/or
diff --git a/net/ipv4/ipvs/ip_vs_lblcr.c b/net/ipv4/ipvs/ip_vs_lblcr.c
index daa260eb21cf..8e3bbeb45138 100644
--- a/net/ipv4/ipvs/ip_vs_lblcr.c
+++ b/net/ipv4/ipvs/ip_vs_lblcr.c
@@ -1,8 +1,6 @@
/*
* IPVS: Locality-Based Least-Connection with Replication scheduler
*
- * Version: $Id: ip_vs_lblcr.c,v 1.11 2002/09/15 08:14:08 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@gnuchina.org>
*
* This program is free software; you can redistribute it and/or
diff --git a/net/ipv4/ipvs/ip_vs_lc.c b/net/ipv4/ipvs/ip_vs_lc.c
index d88fef90a641..ac9f08e065d5 100644
--- a/net/ipv4/ipvs/ip_vs_lc.c
+++ b/net/ipv4/ipvs/ip_vs_lc.c
@@ -1,8 +1,6 @@
/*
* IPVS: Least-Connection Scheduling module
*
- * Version: $Id: ip_vs_lc.c,v 1.10 2003/04/18 09:03:16 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
*
* This program is free software; you can redistribute it and/or
diff --git a/net/ipv4/ipvs/ip_vs_nq.c b/net/ipv4/ipvs/ip_vs_nq.c
index bc2a9e5f2a7b..a46bf258d420 100644
--- a/net/ipv4/ipvs/ip_vs_nq.c
+++ b/net/ipv4/ipvs/ip_vs_nq.c
@@ -1,8 +1,6 @@
/*
* IPVS: Never Queue scheduling module
*
- * Version: $Id: ip_vs_nq.c,v 1.2 2003/06/08 09:31:19 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
*
* This program is free software; you can redistribute it and/or
diff --git a/net/ipv4/ipvs/ip_vs_proto.c b/net/ipv4/ipvs/ip_vs_proto.c
index 4b1c16cbb16b..876714f23d65 100644
--- a/net/ipv4/ipvs/ip_vs_proto.c
+++ b/net/ipv4/ipvs/ip_vs_proto.c
@@ -1,8 +1,6 @@
/*
* ip_vs_proto.c: transport protocol load balancing support for IPVS
*
- * Version: $Id: ip_vs_proto.c,v 1.2 2003/04/18 09:03:16 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Julian Anastasov <ja@ssi.bg>
*
diff --git a/net/ipv4/ipvs/ip_vs_proto_ah.c b/net/ipv4/ipvs/ip_vs_proto_ah.c
index 4bf835e1d86d..73e0ea87c1f5 100644
--- a/net/ipv4/ipvs/ip_vs_proto_ah.c
+++ b/net/ipv4/ipvs/ip_vs_proto_ah.c
@@ -1,8 +1,6 @@
/*
* ip_vs_proto_ah.c: AH IPSec load balancing support for IPVS
*
- * Version: $Id: ip_vs_proto_ah.c,v 1.1 2003/07/04 15:04:37 wensong Exp $
- *
* Authors: Julian Anastasov <ja@ssi.bg>, February 2002
* Wensong Zhang <wensong@linuxvirtualserver.org>
*
diff --git a/net/ipv4/ipvs/ip_vs_proto_esp.c b/net/ipv4/ipvs/ip_vs_proto_esp.c
index db6a6b7b1a0b..21d70c8ffa54 100644
--- a/net/ipv4/ipvs/ip_vs_proto_esp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_esp.c
@@ -1,8 +1,6 @@
/*
* ip_vs_proto_esp.c: ESP IPSec load balancing support for IPVS
*
- * Version: $Id: ip_vs_proto_esp.c,v 1.1 2003/07/04 15:04:37 wensong Exp $
- *
* Authors: Julian Anastasov <ja@ssi.bg>, February 2002
* Wensong Zhang <wensong@linuxvirtualserver.org>
*
diff --git a/net/ipv4/ipvs/ip_vs_proto_tcp.c b/net/ipv4/ipvs/ip_vs_proto_tcp.c
index b83dc14b0a4d..d0ea467986a0 100644
--- a/net/ipv4/ipvs/ip_vs_proto_tcp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_tcp.c
@@ -1,8 +1,6 @@
/*
* ip_vs_proto_tcp.c: TCP load balancing support for IPVS
*
- * Version: $Id: ip_vs_proto_tcp.c,v 1.3 2002/11/30 01:50:35 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Julian Anastasov <ja@ssi.bg>
*
diff --git a/net/ipv4/ipvs/ip_vs_proto_udp.c b/net/ipv4/ipvs/ip_vs_proto_udp.c
index 75771cb3cd6f..c6be5d56823f 100644
--- a/net/ipv4/ipvs/ip_vs_proto_udp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_udp.c
@@ -1,8 +1,6 @@
/*
* ip_vs_proto_udp.c: UDP load balancing support for IPVS
*
- * Version: $Id: ip_vs_proto_udp.c,v 1.3 2002/11/30 01:50:35 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Julian Anastasov <ja@ssi.bg>
*
diff --git a/net/ipv4/ipvs/ip_vs_rr.c b/net/ipv4/ipvs/ip_vs_rr.c
index 433f8a947924..c8db12d39e61 100644
--- a/net/ipv4/ipvs/ip_vs_rr.c
+++ b/net/ipv4/ipvs/ip_vs_rr.c
@@ -1,8 +1,6 @@
/*
* IPVS: Round-Robin Scheduling module
*
- * Version: $Id: ip_vs_rr.c,v 1.9 2002/09/15 08:14:08 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Peter Kese <peter.kese@ijs.si>
*
diff --git a/net/ipv4/ipvs/ip_vs_sched.c b/net/ipv4/ipvs/ip_vs_sched.c
index 121a32b1b756..b64767309855 100644
--- a/net/ipv4/ipvs/ip_vs_sched.c
+++ b/net/ipv4/ipvs/ip_vs_sched.c
@@ -5,8 +5,6 @@
* high-performance and highly available server based on a
* cluster of servers.
*
- * Version: $Id: ip_vs_sched.c,v 1.13 2003/05/10 03:05:23 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Peter Kese <peter.kese@ijs.si>
*
diff --git a/net/ipv4/ipvs/ip_vs_sed.c b/net/ipv4/ipvs/ip_vs_sed.c
index dd7c128f9db3..2a7d31358181 100644
--- a/net/ipv4/ipvs/ip_vs_sed.c
+++ b/net/ipv4/ipvs/ip_vs_sed.c
@@ -1,8 +1,6 @@
/*
* IPVS: Shortest Expected Delay scheduling module
*
- * Version: $Id: ip_vs_sed.c,v 1.1 2003/05/10 03:06:08 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
*
* This program is free software; you can redistribute it and/or
diff --git a/net/ipv4/ipvs/ip_vs_sh.c b/net/ipv4/ipvs/ip_vs_sh.c
index 1b25b00ef1e1..b8fdfac65001 100644
--- a/net/ipv4/ipvs/ip_vs_sh.c
+++ b/net/ipv4/ipvs/ip_vs_sh.c
@@ -1,8 +1,6 @@
/*
* IPVS: Source Hashing scheduling module
*
- * Version: $Id: ip_vs_sh.c,v 1.5 2002/09/15 08:14:08 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@gnuchina.org>
*
* This program is free software; you can redistribute it and/or
diff --git a/net/ipv4/ipvs/ip_vs_sync.c b/net/ipv4/ipvs/ip_vs_sync.c
index eff54efe0351..45e9bd96c286 100644
--- a/net/ipv4/ipvs/ip_vs_sync.c
+++ b/net/ipv4/ipvs/ip_vs_sync.c
@@ -5,8 +5,6 @@
* high-performance and highly available server based on a
* cluster of servers.
*
- * Version: $Id: ip_vs_sync.c,v 1.13 2003/06/08 09:31:19 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
*
* ip_vs_sync: sync connection info from master load balancer to backups
@@ -29,10 +27,12 @@
#include <linux/in.h>
#include <linux/igmp.h> /* for ip_mc_join_group */
#include <linux/udp.h>
+#include <linux/err.h>
+#include <linux/kthread.h>
+#include <linux/wait.h>
#include <net/ip.h>
#include <net/sock.h>
-#include <asm/uaccess.h> /* for get_fs and set_fs */
#include <net/ip_vs.h>
@@ -68,8 +68,8 @@ struct ip_vs_sync_conn_options {
};
struct ip_vs_sync_thread_data {
- struct completion *startup;
- int state;
+ struct socket *sock;
+ char *buf;
};
#define SIMPLE_CONN_SIZE (sizeof(struct ip_vs_sync_conn))
@@ -140,18 +140,19 @@ volatile int ip_vs_backup_syncid = 0;
char ip_vs_master_mcast_ifn[IP_VS_IFNAME_MAXLEN];
char ip_vs_backup_mcast_ifn[IP_VS_IFNAME_MAXLEN];
+/* sync daemon tasks */
+static struct task_struct *sync_master_thread;
+static struct task_struct *sync_backup_thread;
+
/* multicast addr */
-static struct sockaddr_in mcast_addr;
+static struct sockaddr_in mcast_addr = {
+ .sin_family = AF_INET,
+ .sin_port = __constant_htons(IP_VS_SYNC_PORT),
+ .sin_addr.s_addr = __constant_htonl(IP_VS_SYNC_GROUP),
+};
-static inline void sb_queue_tail(struct ip_vs_sync_buff *sb)
-{
- spin_lock(&ip_vs_sync_lock);
- list_add_tail(&sb->list, &ip_vs_sync_queue);
- spin_unlock(&ip_vs_sync_lock);
-}
-
-static inline struct ip_vs_sync_buff * sb_dequeue(void)
+static inline struct ip_vs_sync_buff *sb_dequeue(void)
{
struct ip_vs_sync_buff *sb;
@@ -195,6 +196,16 @@ static inline void ip_vs_sync_buff_release(struct ip_vs_sync_buff *sb)
kfree(sb);
}
+static inline void sb_queue_tail(struct ip_vs_sync_buff *sb)
+{
+ spin_lock(&ip_vs_sync_lock);
+ if (ip_vs_sync_state & IP_VS_STATE_MASTER)
+ list_add_tail(&sb->list, &ip_vs_sync_queue);
+ else
+ ip_vs_sync_buff_release(sb);
+ spin_unlock(&ip_vs_sync_lock);
+}
+
/*
* Get the current sync buffer if it has been created for more
* than the specified time or the specified time is zero.
@@ -574,14 +585,17 @@ static int bind_mcastif_addr(struct socket *sock, char *ifname)
static struct socket * make_send_sock(void)
{
struct socket *sock;
+ int result;
/* First create a socket */
- if (sock_create_kern(PF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock) < 0) {
+ result = sock_create_kern(PF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock);
+ if (result < 0) {
IP_VS_ERR("Error during creation of socket; terminating\n");
- return NULL;
+ return ERR_PTR(result);
}
- if (set_mcast_if(sock->sk, ip_vs_master_mcast_ifn) < 0) {
+ result = set_mcast_if(sock->sk, ip_vs_master_mcast_ifn);
+ if (result < 0) {
IP_VS_ERR("Error setting outbound mcast interface\n");
goto error;
}
@@ -589,14 +603,15 @@ static struct socket * make_send_sock(void)
set_mcast_loop(sock->sk, 0);
set_mcast_ttl(sock->sk, 1);
- if (bind_mcastif_addr(sock, ip_vs_master_mcast_ifn) < 0) {
+ result = bind_mcastif_addr(sock, ip_vs_master_mcast_ifn);
+ if (result < 0) {
IP_VS_ERR("Error binding address of the mcast interface\n");
goto error;
}
- if (sock->ops->connect(sock,
- (struct sockaddr*)&mcast_addr,
- sizeof(struct sockaddr), 0) < 0) {
+ result = sock->ops->connect(sock, (struct sockaddr *) &mcast_addr,
+ sizeof(struct sockaddr), 0);
+ if (result < 0) {
IP_VS_ERR("Error connecting to the multicast addr\n");
goto error;
}
@@ -605,7 +620,7 @@ static struct socket * make_send_sock(void)
error:
sock_release(sock);
- return NULL;
+ return ERR_PTR(result);
}
@@ -615,27 +630,30 @@ static struct socket * make_send_sock(void)
static struct socket * make_receive_sock(void)
{
struct socket *sock;
+ int result;
/* First create a socket */
- if (sock_create_kern(PF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock) < 0) {
+ result = sock_create_kern(PF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock);
+ if (result < 0) {
IP_VS_ERR("Error during creation of socket; terminating\n");
- return NULL;
+ return ERR_PTR(result);
}
/* it is equivalent to the REUSEADDR option in user-space */
sock->sk->sk_reuse = 1;
- if (sock->ops->bind(sock,
- (struct sockaddr*)&mcast_addr,
- sizeof(struct sockaddr)) < 0) {
+ result = sock->ops->bind(sock, (struct sockaddr *) &mcast_addr,
+ sizeof(struct sockaddr));
+ if (result < 0) {
IP_VS_ERR("Error binding to the multicast addr\n");
goto error;
}
/* join the multicast group */
- if (join_mcast_group(sock->sk,
- (struct in_addr*)&mcast_addr.sin_addr,
- ip_vs_backup_mcast_ifn) < 0) {
+ result = join_mcast_group(sock->sk,
+ (struct in_addr *) &mcast_addr.sin_addr,
+ ip_vs_backup_mcast_ifn);
+ if (result < 0) {
IP_VS_ERR("Error joining to the multicast group\n");
goto error;
}
@@ -644,7 +662,7 @@ static struct socket * make_receive_sock(void)
error:
sock_release(sock);
- return NULL;
+ return ERR_PTR(result);
}
@@ -702,44 +720,29 @@ ip_vs_receive(struct socket *sock, char *buffer, const size_t buflen)
}
-static DECLARE_WAIT_QUEUE_HEAD(sync_wait);
-static pid_t sync_master_pid = 0;
-static pid_t sync_backup_pid = 0;
-
-static DECLARE_WAIT_QUEUE_HEAD(stop_sync_wait);
-static int stop_master_sync = 0;
-static int stop_backup_sync = 0;
-
-static void sync_master_loop(void)
+static int sync_thread_master(void *data)
{
- struct socket *sock;
+ struct ip_vs_sync_thread_data *tinfo = data;
struct ip_vs_sync_buff *sb;
- /* create the sending multicast socket */
- sock = make_send_sock();
- if (!sock)
- return;
-
IP_VS_INFO("sync thread started: state = MASTER, mcast_ifn = %s, "
"syncid = %d\n",
ip_vs_master_mcast_ifn, ip_vs_master_syncid);
- for (;;) {
- while ((sb=sb_dequeue())) {
- ip_vs_send_sync_msg(sock, sb->mesg);
+ while (!kthread_should_stop()) {
+ while ((sb = sb_dequeue())) {
+ ip_vs_send_sync_msg(tinfo->sock, sb->mesg);
ip_vs_sync_buff_release(sb);
}
/* check if entries stay in curr_sb for 2 seconds */
- if ((sb = get_curr_sync_buff(2*HZ))) {
- ip_vs_send_sync_msg(sock, sb->mesg);
+ sb = get_curr_sync_buff(2 * HZ);
+ if (sb) {
+ ip_vs_send_sync_msg(tinfo->sock, sb->mesg);
ip_vs_sync_buff_release(sb);
}
- if (stop_master_sync)
- break;
-
- msleep_interruptible(1000);
+ schedule_timeout_interruptible(HZ);
}
/* clean up the sync_buff queue */
@@ -753,267 +756,175 @@ static void sync_master_loop(void)
}
/* release the sending multicast socket */
- sock_release(sock);
+ sock_release(tinfo->sock);
+ kfree(tinfo);
+
+ return 0;
}
-static void sync_backup_loop(void)
+static int sync_thread_backup(void *data)
{
- struct socket *sock;
- char *buf;
+ struct ip_vs_sync_thread_data *tinfo = data;
int len;
- if (!(buf = kmalloc(sync_recv_mesg_maxlen, GFP_ATOMIC))) {
- IP_VS_ERR("sync_backup_loop: kmalloc error\n");
- return;
- }
-
- /* create the receiving multicast socket */
- sock = make_receive_sock();
- if (!sock)
- goto out;
-
IP_VS_INFO("sync thread started: state = BACKUP, mcast_ifn = %s, "
"syncid = %d\n",
ip_vs_backup_mcast_ifn, ip_vs_backup_syncid);
- for (;;) {
- /* do you have data now? */
- while (!skb_queue_empty(&(sock->sk->sk_receive_queue))) {
- if ((len =
- ip_vs_receive(sock, buf,
- sync_recv_mesg_maxlen)) <= 0) {
+ while (!kthread_should_stop()) {
+ wait_event_interruptible(*tinfo->sock->sk->sk_sleep,
+ !skb_queue_empty(&tinfo->sock->sk->sk_receive_queue)
+ || kthread_should_stop());
+
+ /* do we have data now? */
+ while (!skb_queue_empty(&(tinfo->sock->sk->sk_receive_queue))) {
+ len = ip_vs_receive(tinfo->sock, tinfo->buf,
+ sync_recv_mesg_maxlen);
+ if (len <= 0) {
IP_VS_ERR("receiving message error\n");
break;
}
- /* disable bottom half, because it accessed the data
+
+ /* disable bottom half, because it accesses the data
shared by softirq while getting/creating conns */
local_bh_disable();
- ip_vs_process_message(buf, len);
+ ip_vs_process_message(tinfo->buf, len);
local_bh_enable();
}
-
- if (stop_backup_sync)
- break;
-
- msleep_interruptible(1000);
}
/* release the sending multicast socket */
- sock_release(sock);
+ sock_release(tinfo->sock);
+ kfree(tinfo->buf);
+ kfree(tinfo);
- out:
- kfree(buf);
+ return 0;
}
-static void set_sync_pid(int sync_state, pid_t sync_pid)
-{
- if (sync_state == IP_VS_STATE_MASTER)
- sync_master_pid = sync_pid;
- else if (sync_state == IP_VS_STATE_BACKUP)
- sync_backup_pid = sync_pid;
-}
-
-static void set_stop_sync(int sync_state, int set)
+int start_sync_thread(int state, char *mcast_ifn, __u8 syncid)
{
- if (sync_state == IP_VS_STATE_MASTER)
- stop_master_sync = set;
- else if (sync_state == IP_VS_STATE_BACKUP)
- stop_backup_sync = set;
- else {
- stop_master_sync = set;
- stop_backup_sync = set;
- }
-}
+ struct ip_vs_sync_thread_data *tinfo;
+ struct task_struct **realtask, *task;
+ struct socket *sock;
+ char *name, *buf = NULL;
+ int (*threadfn)(void *data);
+ int result = -ENOMEM;
-static int sync_thread(void *startup)
-{
- DECLARE_WAITQUEUE(wait, current);
- mm_segment_t oldmm;
- int state;
- const char *name;
- struct ip_vs_sync_thread_data *tinfo = startup;
+ IP_VS_DBG(7, "%s: pid %d\n", __func__, task_pid_nr(current));
+ IP_VS_DBG(7, "Each ip_vs_sync_conn entry needs %Zd bytes\n",
+ sizeof(struct ip_vs_sync_conn));
- /* increase the module use count */
- ip_vs_use_count_inc();
+ if (state == IP_VS_STATE_MASTER) {
+ if (sync_master_thread)
+ return -EEXIST;
- if (ip_vs_sync_state & IP_VS_STATE_MASTER && !sync_master_pid) {
- state = IP_VS_STATE_MASTER;
+ strlcpy(ip_vs_master_mcast_ifn, mcast_ifn,
+ sizeof(ip_vs_master_mcast_ifn));
+ ip_vs_master_syncid = syncid;
+ realtask = &sync_master_thread;
name = "ipvs_syncmaster";
- } else if (ip_vs_sync_state & IP_VS_STATE_BACKUP && !sync_backup_pid) {
- state = IP_VS_STATE_BACKUP;
+ threadfn = sync_thread_master;
+ sock = make_send_sock();
+ } else if (state == IP_VS_STATE_BACKUP) {
+ if (sync_backup_thread)
+ return -EEXIST;
+
+ strlcpy(ip_vs_backup_mcast_ifn, mcast_ifn,
+ sizeof(ip_vs_backup_mcast_ifn));
+ ip_vs_backup_syncid = syncid;
+ realtask = &sync_backup_thread;
name = "ipvs_syncbackup";
+ threadfn = sync_thread_backup;
+ sock = make_receive_sock();
} else {
- IP_VS_BUG();
- ip_vs_use_count_dec();
return -EINVAL;
}
- daemonize(name);
-
- oldmm = get_fs();
- set_fs(KERNEL_DS);
-
- /* Block all signals */
- spin_lock_irq(&current->sighand->siglock);
- siginitsetinv(&current->blocked, 0);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
+ if (IS_ERR(sock)) {
+ result = PTR_ERR(sock);
+ goto out;
+ }
- /* set the maximum length of sync message */
set_sync_mesg_maxlen(state);
+ if (state == IP_VS_STATE_BACKUP) {
+ buf = kmalloc(sync_recv_mesg_maxlen, GFP_KERNEL);
+ if (!buf)
+ goto outsocket;
+ }
- /* set up multicast address */
- mcast_addr.sin_family = AF_INET;
- mcast_addr.sin_port = htons(IP_VS_SYNC_PORT);
- mcast_addr.sin_addr.s_addr = htonl(IP_VS_SYNC_GROUP);
-
- add_wait_queue(&sync_wait, &wait);
-
- set_sync_pid(state, task_pid_nr(current));
- complete(tinfo->startup);
-
- /*
- * once we call the completion queue above, we should
- * null out that reference, since its allocated on the
- * stack of the creating kernel thread
- */
- tinfo->startup = NULL;
-
- /* processing master/backup loop here */
- if (state == IP_VS_STATE_MASTER)
- sync_master_loop();
- else if (state == IP_VS_STATE_BACKUP)
- sync_backup_loop();
- else IP_VS_BUG();
-
- remove_wait_queue(&sync_wait, &wait);
-
- /* thread exits */
-
- /*
- * If we weren't explicitly stopped, then we
- * exited in error, and should undo our state
- */
- if ((!stop_master_sync) && (!stop_backup_sync))
- ip_vs_sync_state -= tinfo->state;
+ tinfo = kmalloc(sizeof(*tinfo), GFP_KERNEL);
+ if (!tinfo)
+ goto outbuf;
- set_sync_pid(state, 0);
- IP_VS_INFO("sync thread stopped!\n");
+ tinfo->sock = sock;
+ tinfo->buf = buf;
- set_fs(oldmm);
+ task = kthread_run(threadfn, tinfo, name);
+ if (IS_ERR(task)) {
+ result = PTR_ERR(task);
+ goto outtinfo;
+ }
- /* decrease the module use count */
- ip_vs_use_count_dec();
+ /* mark as active */
+ *realtask = task;
+ ip_vs_sync_state |= state;
- set_stop_sync(state, 0);
- wake_up(&stop_sync_wait);
+ /* increase the module use count */
+ ip_vs_use_count_inc();
- /*
- * we need to free the structure that was allocated
- * for us in start_sync_thread
- */
- kfree(tinfo);
return 0;
-}
-
-
-static int fork_sync_thread(void *startup)
-{
- pid_t pid;
-
- /* fork the sync thread here, then the parent process of the
- sync thread is the init process after this thread exits. */
- repeat:
- if ((pid = kernel_thread(sync_thread, startup, 0)) < 0) {
- IP_VS_ERR("could not create sync_thread due to %d... "
- "retrying.\n", pid);
- msleep_interruptible(1000);
- goto repeat;
- }
- return 0;
+outtinfo:
+ kfree(tinfo);
+outbuf:
+ kfree(buf);
+outsocket:
+ sock_release(sock);
+out:
+ return result;
}
-int start_sync_thread(int state, char *mcast_ifn, __u8 syncid)
+int stop_sync_thread(int state)
{
- DECLARE_COMPLETION_ONSTACK(startup);
- pid_t pid;
- struct ip_vs_sync_thread_data *tinfo;
-
- if ((state == IP_VS_STATE_MASTER && sync_master_pid) ||
- (state == IP_VS_STATE_BACKUP && sync_backup_pid))
- return -EEXIST;
-
- /*
- * Note that tinfo will be freed in sync_thread on exit
- */
- tinfo = kmalloc(sizeof(struct ip_vs_sync_thread_data), GFP_KERNEL);
- if (!tinfo)
- return -ENOMEM;
-
IP_VS_DBG(7, "%s: pid %d\n", __func__, task_pid_nr(current));
- IP_VS_DBG(7, "Each ip_vs_sync_conn entry need %Zd bytes\n",
- sizeof(struct ip_vs_sync_conn));
- ip_vs_sync_state |= state;
if (state == IP_VS_STATE_MASTER) {
- strlcpy(ip_vs_master_mcast_ifn, mcast_ifn,
- sizeof(ip_vs_master_mcast_ifn));
- ip_vs_master_syncid = syncid;
- } else {
- strlcpy(ip_vs_backup_mcast_ifn, mcast_ifn,
- sizeof(ip_vs_backup_mcast_ifn));
- ip_vs_backup_syncid = syncid;
- }
-
- tinfo->state = state;
- tinfo->startup = &startup;
-
- repeat:
- if ((pid = kernel_thread(fork_sync_thread, tinfo, 0)) < 0) {
- IP_VS_ERR("could not create fork_sync_thread due to %d... "
- "retrying.\n", pid);
- msleep_interruptible(1000);
- goto repeat;
- }
-
- wait_for_completion(&startup);
-
- return 0;
-}
+ if (!sync_master_thread)
+ return -ESRCH;
+ IP_VS_INFO("stopping master sync thread %d ...\n",
+ task_pid_nr(sync_master_thread));
-int stop_sync_thread(int state)
-{
- DECLARE_WAITQUEUE(wait, current);
+ /*
+ * The lock synchronizes with sb_queue_tail(), so that we don't
+ * add sync buffers to the queue, when we are already in
+ * progress of stopping the master sync daemon.
+ */
- if ((state == IP_VS_STATE_MASTER && !sync_master_pid) ||
- (state == IP_VS_STATE_BACKUP && !sync_backup_pid))
- return -ESRCH;
+ spin_lock(&ip_vs_sync_lock);
+ ip_vs_sync_state &= ~IP_VS_STATE_MASTER;
+ spin_unlock(&ip_vs_sync_lock);
+ kthread_stop(sync_master_thread);
+ sync_master_thread = NULL;
+ } else if (state == IP_VS_STATE_BACKUP) {
+ if (!sync_backup_thread)
+ return -ESRCH;
+
+ IP_VS_INFO("stopping backup sync thread %d ...\n",
+ task_pid_nr(sync_backup_thread));
+
+ ip_vs_sync_state &= ~IP_VS_STATE_BACKUP;
+ kthread_stop(sync_backup_thread);
+ sync_backup_thread = NULL;
+ } else {
+ return -EINVAL;
+ }
- IP_VS_DBG(7, "%s: pid %d\n", __func__, task_pid_nr(current));
- IP_VS_INFO("stopping sync thread %d ...\n",
- (state == IP_VS_STATE_MASTER) ?
- sync_master_pid : sync_backup_pid);
-
- __set_current_state(TASK_UNINTERRUPTIBLE);
- add_wait_queue(&stop_sync_wait, &wait);
- set_stop_sync(state, 1);
- ip_vs_sync_state -= state;
- wake_up(&sync_wait);
- schedule();
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&stop_sync_wait, &wait);
-
- /* Note: no need to reap the sync thread, because its parent
- process is the init process */
-
- if ((state == IP_VS_STATE_MASTER && stop_master_sync) ||
- (state == IP_VS_STATE_BACKUP && stop_backup_sync))
- IP_VS_BUG();
+ /* decrease the module use count */
+ ip_vs_use_count_dec();
return 0;
}
diff --git a/net/ipv4/ipvs/ip_vs_wlc.c b/net/ipv4/ipvs/ip_vs_wlc.c
index 8a9d913261d8..772c3cb4eca1 100644
--- a/net/ipv4/ipvs/ip_vs_wlc.c
+++ b/net/ipv4/ipvs/ip_vs_wlc.c
@@ -1,8 +1,6 @@
/*
* IPVS: Weighted Least-Connection Scheduling module
*
- * Version: $Id: ip_vs_wlc.c,v 1.13 2003/04/18 09:03:16 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Peter Kese <peter.kese@ijs.si>
*
diff --git a/net/ipv4/ipvs/ip_vs_wrr.c b/net/ipv4/ipvs/ip_vs_wrr.c
index 85c680add6df..1d6932d7dc97 100644
--- a/net/ipv4/ipvs/ip_vs_wrr.c
+++ b/net/ipv4/ipvs/ip_vs_wrr.c
@@ -1,8 +1,6 @@
/*
* IPVS: Weighted Round-Robin Scheduling module
*
- * Version: $Id: ip_vs_wrr.c,v 1.12 2002/09/15 08:14:08 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
*
* This program is free software; you can redistribute it and/or
diff --git a/net/ipv4/ipvs/ip_vs_xmit.c b/net/ipv4/ipvs/ip_vs_xmit.c
index f63006caea03..9892d4aca42e 100644
--- a/net/ipv4/ipvs/ip_vs_xmit.c
+++ b/net/ipv4/ipvs/ip_vs_xmit.c
@@ -1,8 +1,6 @@
/*
* ip_vs_xmit.c: various packet transmitters for IPVS
*
- * Version: $Id: ip_vs_xmit.c,v 1.2 2002/11/30 01:50:35 wensong Exp $
- *
* Authors: Wensong Zhang <wensong@linuxvirtualserver.org>
* Julian Anastasov <ja@ssi.bg>
*
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-16 11:28:24 +0300