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WSL2-Linux-Kernel
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Merge branch 'master' of git://1984.lsi.us.es/net-next

This commit is contained in:
David S. Miller 2012-05-08 14:40:21 -04:00
Родитель b44907e64c d16cf20e2f
Коммит 9bb862beb6
34 изменённых файлов: 856 добавлений и 1708 удалений
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9
Documentation/ABI/removed/ip_queue Normal file
Просмотреть файл

@ -0,0 +1,9 @@
What: ip_queue
Date: finally removed in kernel v3.5.0
Contact: Pablo Neira Ayuso <pablo@netfilter.org>
Description:
ip_queue has been replaced by nfnetlink_queue which provides
more advanced queueing mechanism to user-space. The ip_queue
module was already announced to become obsolete years ago.
Users:

13
Documentation/networking/ip-sysctl.txt
Просмотреть файл

@ -1301,13 +1301,22 @@ bridge-nf-call-ip6tables - BOOLEAN
bridge-nf-filter-vlan-tagged - BOOLEAN
1 : pass bridged vlan-tagged ARP/IP/IPv6 traffic to {arp,ip,ip6}tables.
0 : disable this.
Default: 1
Default: 0
bridge-nf-filter-pppoe-tagged - BOOLEAN
1 : pass bridged pppoe-tagged IP/IPv6 traffic to {ip,ip6}tables.
0 : disable this.
Default: 1
Default: 0
bridge-nf-pass-vlan-input-dev - BOOLEAN
1: if bridge-nf-filter-vlan-tagged is enabled, try to find a vlan
interface on the bridge and set the netfilter input device to the vlan.
This allows use of e.g. "iptables -i br0.1" and makes the REDIRECT
target work with vlan-on-top-of-bridge interfaces. When no matching
vlan interface is found, or this switch is off, the input device is
set to the bridge interface.
0: disable bridge netfilter vlan interface lookup.
Default: 0
proc/sys/net/sctp/* Variables:

5
include/linux/ip_vs.h
Просмотреть файл

@ -89,6 +89,7 @@
#define IP_VS_CONN_F_TEMPLATE 0x1000 /* template, not connection */
#define IP_VS_CONN_F_ONE_PACKET 0x2000 /* forward only one packet */
/* Initial bits allowed in backup server */
#define IP_VS_CONN_F_BACKUP_MASK (IP_VS_CONN_F_FWD_MASK | \
IP_VS_CONN_F_NOOUTPUT | \
IP_VS_CONN_F_INACTIVE | \
@ -97,6 +98,10 @@
IP_VS_CONN_F_TEMPLATE \
)
/* Bits allowed to update in backup server */
#define IP_VS_CONN_F_BACKUP_UPD_MASK (IP_VS_CONN_F_INACTIVE | \
IP_VS_CONN_F_SEQ_MASK)
/* Flags that are not sent to backup server start from bit 16 */
#define IP_VS_CONN_F_NFCT (1 << 16) /* use netfilter conntrack */

4
include/linux/netfilter/nf_conntrack_common.h
Просмотреть файл

@ -83,6 +83,10 @@ enum ip_conntrack_status {
/* Conntrack is a fake untracked entry */
IPS_UNTRACKED_BIT = 12,
IPS_UNTRACKED = (1 << IPS_UNTRACKED_BIT),
/* Conntrack got a helper explicitly attached via CT target. */
IPS_HELPER_BIT = 13,
IPS_HELPER = (1 << IPS_HELPER_BIT),
};
/* Connection tracking event types */

1
include/linux/netfilter_ipv4/Kbuild
Просмотреть файл

@ -1,4 +1,3 @@
header-y += ip_queue.h
header-y += ip_tables.h
header-y += ipt_CLUSTERIP.h
header-y += ipt_ECN.h

72
include/linux/netfilter_ipv4/ip_queue.h
Просмотреть файл

@ -1,72 +0,0 @@
/*
* This is a module which is used for queueing IPv4 packets and
* communicating with userspace via netlink.
*
* (C) 2000 James Morris, this code is GPL.
*/
#ifndef _IP_QUEUE_H
#define _IP_QUEUE_H
#ifdef __KERNEL__
#ifdef DEBUG_IPQ
#define QDEBUG(x...) printk(KERN_DEBUG ## x)
#else
#define QDEBUG(x...)
#endif /* DEBUG_IPQ */
#else
#include <net/if.h>
#endif /* ! __KERNEL__ */
/* Messages sent from kernel */
typedef struct ipq_packet_msg {
unsigned long packet_id; /* ID of queued packet */
unsigned long mark; /* Netfilter mark value */
long timestamp_sec; /* Packet arrival time (seconds) */
long timestamp_usec; /* Packet arrvial time (+useconds) */
unsigned int hook; /* Netfilter hook we rode in on */
char indev_name[IFNAMSIZ]; /* Name of incoming interface */
char outdev_name[IFNAMSIZ]; /* Name of outgoing interface */
__be16 hw_protocol; /* Hardware protocol (network order) */
unsigned short hw_type; /* Hardware type */
unsigned char hw_addrlen; /* Hardware address length */
unsigned char hw_addr[8]; /* Hardware address */
size_t data_len; /* Length of packet data */
unsigned char payload[0]; /* Optional packet data */
} ipq_packet_msg_t;
/* Messages sent from userspace */
typedef struct ipq_mode_msg {
unsigned char value; /* Requested mode */
size_t range; /* Optional range of packet requested */
} ipq_mode_msg_t;
typedef struct ipq_verdict_msg {
unsigned int value; /* Verdict to hand to netfilter */
unsigned long id; /* Packet ID for this verdict */
size_t data_len; /* Length of replacement data */
unsigned char payload[0]; /* Optional replacement packet */
} ipq_verdict_msg_t;
typedef struct ipq_peer_msg {
union {
ipq_verdict_msg_t verdict;
ipq_mode_msg_t mode;
} msg;
} ipq_peer_msg_t;
/* Packet delivery modes */
enum {
IPQ_COPY_NONE, /* Initial mode, packets are dropped */
IPQ_COPY_META, /* Copy metadata */
IPQ_COPY_PACKET /* Copy metadata + packet (range) */
};
#define IPQ_COPY_MAX IPQ_COPY_PACKET
/* Types of messages */
#define IPQM_BASE 0x10 /* standard netlink messages below this */
#define IPQM_MODE (IPQM_BASE + 1) /* Mode request from peer */
#define IPQM_VERDICT (IPQM_BASE + 2) /* Verdict from peer */
#define IPQM_PACKET (IPQM_BASE + 3) /* Packet from kernel */
#define IPQM_MAX (IPQM_BASE + 4)
#endif /*_IP_QUEUE_H*/

2
include/linux/netlink.h
Просмотреть файл

@ -7,7 +7,7 @@
#define NETLINK_ROUTE 0 /* Routing/device hook */
#define NETLINK_UNUSED 1 /* Unused number */
#define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */
#define NETLINK_FIREWALL 3 /* Firewalling hook */
#define NETLINK_FIREWALL 3 /* Unused number, formerly ip_queue */
#define NETLINK_SOCK_DIAG 4 /* socket monitoring */
#define NETLINK_NFLOG 5 /* netfilter/iptables ULOG */
#define NETLINK_XFRM 6 /* ipsec */

87
include/net/ip_vs.h
Просмотреть файл

@ -504,6 +504,7 @@ struct ip_vs_conn {
* state transition triggerd
* synchronization
*/
unsigned long sync_endtime; /* jiffies + sent_retries */
/* Control members */
struct ip_vs_conn *control; /* Master control connection */
@ -783,6 +784,16 @@ struct ip_vs_app {
void (*timeout_change)(struct ip_vs_app *app, int flags);
};
struct ipvs_master_sync_state {
struct list_head sync_queue;
struct ip_vs_sync_buff *sync_buff;
int sync_queue_len;
unsigned int sync_queue_delay;
struct task_struct *master_thread;
struct delayed_work master_wakeup_work;
struct netns_ipvs *ipvs;
};
/* IPVS in network namespace */
struct netns_ipvs {
int gen; /* Generation */
@ -869,10 +880,15 @@ struct netns_ipvs {
#endif
int sysctl_snat_reroute;
int sysctl_sync_ver;
int sysctl_sync_ports;
int sysctl_sync_qlen_max;
int sysctl_sync_sock_size;
int sysctl_cache_bypass;
int sysctl_expire_nodest_conn;
int sysctl_expire_quiescent_template;
int sysctl_sync_threshold[2];
unsigned int sysctl_sync_refresh_period;
int sysctl_sync_retries;
int sysctl_nat_icmp_send;
/* ip_vs_lblc */
@ -888,13 +904,11 @@ struct netns_ipvs {
spinlock_t est_lock;
struct timer_list est_timer; /* Estimation timer */
/* ip_vs_sync */
struct list_head sync_queue;
spinlock_t sync_lock;
struct ip_vs_sync_buff *sync_buff;
struct ipvs_master_sync_state *ms;
spinlock_t sync_buff_lock;
struct sockaddr_in sync_mcast_addr;
struct task_struct *master_thread;
struct task_struct *backup_thread;
struct task_struct **backup_threads;
int threads_mask;
int send_mesg_maxlen;
int recv_mesg_maxlen;
volatile int sync_state;
@ -911,6 +925,14 @@ struct netns_ipvs {
#define DEFAULT_SYNC_THRESHOLD 3
#define DEFAULT_SYNC_PERIOD 50
#define DEFAULT_SYNC_VER 1
#define DEFAULT_SYNC_REFRESH_PERIOD (0U * HZ)
#define DEFAULT_SYNC_RETRIES 0
#define IPVS_SYNC_WAKEUP_RATE 8
#define IPVS_SYNC_QLEN_MAX (IPVS_SYNC_WAKEUP_RATE * 4)
#define IPVS_SYNC_SEND_DELAY (HZ / 50)
#define IPVS_SYNC_CHECK_PERIOD HZ
#define IPVS_SYNC_FLUSH_TIME (HZ * 2)
#define IPVS_SYNC_PORTS_MAX (1 << 6)
#ifdef CONFIG_SYSCTL
@ -921,7 +943,17 @@ static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs)
static inline int sysctl_sync_period(struct netns_ipvs *ipvs)
{
return ipvs->sysctl_sync_threshold[1];
return ACCESS_ONCE(ipvs->sysctl_sync_threshold[1]);
}
static inline unsigned int sysctl_sync_refresh_period(struct netns_ipvs *ipvs)
{
return ACCESS_ONCE(ipvs->sysctl_sync_refresh_period);
}
static inline int sysctl_sync_retries(struct netns_ipvs *ipvs)
{
return ipvs->sysctl_sync_retries;
}
static inline int sysctl_sync_ver(struct netns_ipvs *ipvs)
@ -929,6 +961,21 @@ static inline int sysctl_sync_ver(struct netns_ipvs *ipvs)
return ipvs->sysctl_sync_ver;
}
static inline int sysctl_sync_ports(struct netns_ipvs *ipvs)
{
return ACCESS_ONCE(ipvs->sysctl_sync_ports);
}
static inline int sysctl_sync_qlen_max(struct netns_ipvs *ipvs)
{
return ipvs->sysctl_sync_qlen_max;
}
static inline int sysctl_sync_sock_size(struct netns_ipvs *ipvs)
{
return ipvs->sysctl_sync_sock_size;
}
#else
static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs)
@ -941,11 +988,36 @@ static inline int sysctl_sync_period(struct netns_ipvs *ipvs)
return DEFAULT_SYNC_PERIOD;
}
static inline unsigned int sysctl_sync_refresh_period(struct netns_ipvs *ipvs)
{
return DEFAULT_SYNC_REFRESH_PERIOD;
}
static inline int sysctl_sync_retries(struct netns_ipvs *ipvs)
{
return DEFAULT_SYNC_RETRIES & 3;
}
static inline int sysctl_sync_ver(struct netns_ipvs *ipvs)
{
return DEFAULT_SYNC_VER;
}
static inline int sysctl_sync_ports(struct netns_ipvs *ipvs)
{
return 1;
}
static inline int sysctl_sync_qlen_max(struct netns_ipvs *ipvs)
{
return IPVS_SYNC_QLEN_MAX;
}
static inline int sysctl_sync_sock_size(struct netns_ipvs *ipvs)
{
return 0;
}
#endif
/*
@ -1185,7 +1257,6 @@ extern void ip_vs_scheduler_err(struct ip_vs_service *svc, const char *msg);
extern struct ip_vs_stats ip_vs_stats;
extern int sysctl_ip_vs_sync_ver;
extern void ip_vs_sync_switch_mode(struct net *net, int mode);
extern struct ip_vs_service *
ip_vs_service_get(struct net *net, int af, __u32 fwmark, __u16 protocol,
const union nf_inet_addr *vaddr, __be16 vport);
@ -1219,7 +1290,7 @@ extern struct ip_vs_dest *ip_vs_try_bind_dest(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 void ip_vs_sync_conn(struct net *net, struct ip_vs_conn *cp, int pkts);
/*

10
include/net/netfilter/nf_conntrack.h
Просмотреть файл

@ -321,14 +321,8 @@ extern unsigned int nf_conntrack_max;
extern unsigned int nf_conntrack_hash_rnd;
void init_nf_conntrack_hash_rnd(void);
#define NF_CT_STAT_INC(net, count) \
__this_cpu_inc((net)->ct.stat->count)
#define NF_CT_STAT_INC_ATOMIC(net, count) \
do { \
local_bh_disable(); \
__this_cpu_inc((net)->ct.stat->count); \
local_bh_enable(); \
} while (0)
#define NF_CT_STAT_INC(net, count) __this_cpu_inc((net)->ct.stat->count)
#define NF_CT_STAT_INC_ATOMIC(net, count) this_cpu_inc((net)->ct.stat->count)
#define MODULE_ALIAS_NFCT_HELPER(helper) \
MODULE_ALIAS("nfct-helper-" helper)

4
include/net/netfilter/nf_conntrack_helper.h
Просмотреть файл

@ -60,8 +60,8 @@ static inline struct nf_conn_help *nfct_help(const struct nf_conn *ct)
return nf_ct_ext_find(ct, NF_CT_EXT_HELPER);
}
extern int nf_conntrack_helper_init(void);
extern void nf_conntrack_helper_fini(void);
extern int nf_conntrack_helper_init(struct net *net);
extern void nf_conntrack_helper_fini(struct net *net);
extern int nf_conntrack_broadcast_help(struct sk_buff *skb,
unsigned int protoff,

3
include/net/netns/conntrack.h
Просмотреть файл

@ -26,11 +26,14 @@ struct netns_ct {
int sysctl_tstamp;
int sysctl_checksum;
unsigned int sysctl_log_invalid; /* Log invalid packets */
int sysctl_auto_assign_helper;
bool auto_assign_helper_warned;
#ifdef CONFIG_SYSCTL
struct ctl_table_header *sysctl_header;
struct ctl_table_header *acct_sysctl_header;
struct ctl_table_header *tstamp_sysctl_header;
struct ctl_table_header *event_sysctl_header;
struct ctl_table_header *helper_sysctl_header;
#endif
char *slabname;
};

26
net/bridge/br_netfilter.c
Просмотреть файл

@ -54,12 +54,14 @@ static int brnf_call_ip6tables __read_mostly = 1;
static int brnf_call_arptables __read_mostly = 1;
static int brnf_filter_vlan_tagged __read_mostly = 0;
static int brnf_filter_pppoe_tagged __read_mostly = 0;
static int brnf_pass_vlan_indev __read_mostly = 0;
#else
#define brnf_call_iptables 1
#define brnf_call_ip6tables 1
#define brnf_call_arptables 1
#define brnf_filter_vlan_tagged 0
#define brnf_filter_pppoe_tagged 0
#define brnf_pass_vlan_indev 0
#endif
#define IS_IP(skb) \
@ -503,6 +505,19 @@ bridged_dnat:
return 0;
}
static struct net_device *brnf_get_logical_dev(struct sk_buff *skb, const struct net_device *dev)
{
struct net_device *vlan, *br;
br = bridge_parent(dev);
if (brnf_pass_vlan_indev == 0 || !vlan_tx_tag_present(skb))
return br;
vlan = __vlan_find_dev_deep(br, vlan_tx_tag_get(skb) & VLAN_VID_MASK);
return vlan ? vlan : br;
}
/* Some common code for IPv4/IPv6 */
static struct net_device *setup_pre_routing(struct sk_buff *skb)
{
@ -515,7 +530,7 @@ static struct net_device *setup_pre_routing(struct sk_buff *skb)
nf_bridge->mask |= BRNF_NF_BRIDGE_PREROUTING;
nf_bridge->physindev = skb->dev;
skb->dev = bridge_parent(skb->dev);
skb->dev = brnf_get_logical_dev(skb, skb->dev);
if (skb->protocol == htons(ETH_P_8021Q))
nf_bridge->mask |= BRNF_8021Q;
else if (skb->protocol == htons(ETH_P_PPP_SES))
@ -774,7 +789,7 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff *skb,
else
skb->protocol = htons(ETH_P_IPV6);
NF_HOOK(pf, NF_INET_FORWARD, skb, bridge_parent(in), parent,
NF_HOOK(pf, NF_INET_FORWARD, skb, brnf_get_logical_dev(skb, in), parent,
br_nf_forward_finish);
return NF_STOLEN;
@ -1002,6 +1017,13 @@ static ctl_table brnf_table[] = {
.mode = 0644,
.proc_handler = brnf_sysctl_call_tables,
},
{
.procname = "bridge-nf-pass-vlan-input-dev",
.data = &brnf_pass_vlan_indev,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = brnf_sysctl_call_tables,
},
{ }
};
#endif

2
net/core/sock.c
Просмотреть файл

@ -259,7 +259,9 @@ static struct lock_class_key af_callback_keys[AF_MAX];
/* Run time adjustable parameters. */
__u32 sysctl_wmem_max __read_mostly = SK_WMEM_MAX;
EXPORT_SYMBOL(sysctl_wmem_max);
__u32 sysctl_rmem_max __read_mostly = SK_RMEM_MAX;
EXPORT_SYMBOL(sysctl_rmem_max);
__u32 sysctl_wmem_default __read_mostly = SK_WMEM_MAX;
__u32 sysctl_rmem_default __read_mostly = SK_RMEM_MAX;

3
net/ipv4/netfilter/Makefile
Просмотреть файл

@ -66,6 +66,3 @@ obj-$(CONFIG_IP_NF_ARP_MANGLE) += arpt_mangle.o
# just filtering instance of ARP tables for now
obj-$(CONFIG_IP_NF_ARPFILTER) += arptable_filter.o
obj-$(CONFIG_IP_NF_QUEUE) += ip_queue.o

639
net/ipv4/netfilter/ip_queue.c
Просмотреть файл

@ -1,639 +0,0 @@
/*
* This is a module which is used for queueing IPv4 packets and
* communicating with userspace via netlink.
*
* (C) 2000-2002 James Morris <jmorris@intercode.com.au>
* (C) 2003-2005 Netfilter Core Team <coreteam@netfilter.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/ip.h>
#include <linux/notifier.h>
#include <linux/netdevice.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv4/ip_queue.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netlink.h>
#include <linux/spinlock.h>
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/security.h>
#include <linux/net.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/route.h>
#include <net/netfilter/nf_queue.h>
#include <net/ip.h>
#define IPQ_QMAX_DEFAULT 1024
#define IPQ_PROC_FS_NAME "ip_queue"
#define NET_IPQ_QMAX 2088
#define NET_IPQ_QMAX_NAME "ip_queue_maxlen"
typedef int (*ipq_cmpfn)(struct nf_queue_entry *, unsigned long);
static unsigned char copy_mode __read_mostly = IPQ_COPY_NONE;
static unsigned int queue_maxlen __read_mostly = IPQ_QMAX_DEFAULT;
static DEFINE_SPINLOCK(queue_lock);
static int peer_pid __read_mostly;
static unsigned int copy_range __read_mostly;
static unsigned int queue_total;
static unsigned int queue_dropped = 0;
static unsigned int queue_user_dropped = 0;
static struct sock *ipqnl __read_mostly;
static LIST_HEAD(queue_list);
static DEFINE_MUTEX(ipqnl_mutex);
static inline void
__ipq_enqueue_entry(struct nf_queue_entry *entry)
{
list_add_tail(&entry->list, &queue_list);
queue_total++;
}
static inline int
__ipq_set_mode(unsigned char mode, unsigned int range)
{
int status = 0;
switch(mode) {
case IPQ_COPY_NONE:
case IPQ_COPY_META:
copy_mode = mode;
copy_range = 0;
break;
case IPQ_COPY_PACKET:
if (range > 0xFFFF)
range = 0xFFFF;
copy_range = range;
copy_mode = mode;
break;
default:
status = -EINVAL;
}
return status;
}
static void __ipq_flush(ipq_cmpfn cmpfn, unsigned long data);
static inline void
__ipq_reset(void)
{
peer_pid = 0;
net_disable_timestamp();
__ipq_set_mode(IPQ_COPY_NONE, 0);
__ipq_flush(NULL, 0);
}
static struct nf_queue_entry *
ipq_find_dequeue_entry(unsigned long id)
{
struct nf_queue_entry *entry = NULL, *i;
spin_lock_bh(&queue_lock);
list_for_each_entry(i, &queue_list, list) {
if ((unsigned long)i == id) {
entry = i;
break;
}
}
if (entry) {
list_del(&entry->list);
queue_total--;
}
spin_unlock_bh(&queue_lock);
return entry;
}
static void
__ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
{
struct nf_queue_entry *entry, *next;
list_for_each_entry_safe(entry, next, &queue_list, list) {
if (!cmpfn || cmpfn(entry, data)) {
list_del(&entry->list);
queue_total--;
nf_reinject(entry, NF_DROP);
}
}
}
static void
ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
{
spin_lock_bh(&queue_lock);
__ipq_flush(cmpfn, data);
spin_unlock_bh(&queue_lock);
}
static struct sk_buff *
ipq_build_packet_message(struct nf_queue_entry *entry, int *errp)
{
sk_buff_data_t old_tail;
size_t size = 0;
size_t data_len = 0;
struct sk_buff *skb;
struct ipq_packet_msg *pmsg;
struct nlmsghdr *nlh;
struct timeval tv;
switch (ACCESS_ONCE(copy_mode)) {
case IPQ_COPY_META:
case IPQ_COPY_NONE:
size = NLMSG_SPACE(sizeof(*pmsg));
break;
case IPQ_COPY_PACKET:
if (entry->skb->ip_summed == CHECKSUM_PARTIAL &&
(*errp = skb_checksum_help(entry->skb)))
return NULL;
data_len = ACCESS_ONCE(copy_range);
if (data_len == 0 || data_len > entry->skb->len)
data_len = entry->skb->len;
size = NLMSG_SPACE(sizeof(*pmsg) + data_len);
break;
default:
*errp = -EINVAL;
return NULL;
}
skb = alloc_skb(size, GFP_ATOMIC);
if (!skb)
goto nlmsg_failure;
old_tail = skb->tail;
nlh = NLMSG_PUT(skb, 0, 0, IPQM_PACKET, size - sizeof(*nlh));
pmsg = NLMSG_DATA(nlh);
memset(pmsg, 0, sizeof(*pmsg));
pmsg->packet_id = (unsigned long )entry;
pmsg->data_len = data_len;
tv = ktime_to_timeval(entry->skb->tstamp);
pmsg->timestamp_sec = tv.tv_sec;
pmsg->timestamp_usec = tv.tv_usec;
pmsg->mark = entry->skb->mark;
pmsg->hook = entry->hook;
pmsg->hw_protocol = entry->skb->protocol;
if (entry->indev)
strcpy(pmsg->indev_name, entry->indev->name);
else
pmsg->indev_name[0] = '\0';
if (entry->outdev)
strcpy(pmsg->outdev_name, entry->outdev->name);
else
pmsg->outdev_name[0] = '\0';
if (entry->indev && entry->skb->dev &&
entry->skb->mac_header != entry->skb->network_header) {
pmsg->hw_type = entry->skb->dev->type;
pmsg->hw_addrlen = dev_parse_header(entry->skb,
pmsg->hw_addr);
}
if (data_len)
if (skb_copy_bits(entry->skb, 0, pmsg->payload, data_len))
BUG();
nlh->nlmsg_len = skb->tail - old_tail;
return skb;
nlmsg_failure:
kfree_skb(skb);
*errp = -EINVAL;
printk(KERN_ERR "ip_queue: error creating packet message\n");
return NULL;
}
static int
ipq_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
{
int status = -EINVAL;
struct sk_buff *nskb;
if (copy_mode == IPQ_COPY_NONE)
return -EAGAIN;
nskb = ipq_build_packet_message(entry, &status);
if (nskb == NULL)
return status;
spin_lock_bh(&queue_lock);
if (!peer_pid)
goto err_out_free_nskb;
if (queue_total >= queue_maxlen) {
queue_dropped++;
status = -ENOSPC;
if (net_ratelimit())
printk (KERN_WARNING "ip_queue: full at %d entries, "
"dropping packets(s). Dropped: %d\n", queue_total,
queue_dropped);
goto err_out_free_nskb;
}
/* netlink_unicast will either free the nskb or attach it to a socket */
status = netlink_unicast(ipqnl, nskb, peer_pid, MSG_DONTWAIT);
if (status < 0) {
queue_user_dropped++;
goto err_out_unlock;
}
__ipq_enqueue_entry(entry);
spin_unlock_bh(&queue_lock);
return status;
err_out_free_nskb:
kfree_skb(nskb);
err_out_unlock:
spin_unlock_bh(&queue_lock);
return status;
}
static int
ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct nf_queue_entry *e)
{
int diff;
struct iphdr *user_iph = (struct iphdr *)v->payload;
struct sk_buff *nskb;
if (v->data_len < sizeof(*user_iph))
return 0;
diff = v->data_len - e->skb->len;
if (diff < 0) {
if (pskb_trim(e->skb, v->data_len))
return -ENOMEM;
} else if (diff > 0) {
if (v->data_len > 0xFFFF)
return -EINVAL;
if (diff > skb_tailroom(e->skb)) {
nskb = skb_copy_expand(e->skb, skb_headroom(e->skb),
diff, GFP_ATOMIC);
if (!nskb) {
printk(KERN_WARNING "ip_queue: error "
"in mangle, dropping packet\n");
return -ENOMEM;
}
kfree_skb(e->skb);
e->skb = nskb;
}
skb_put(e->skb, diff);
}
if (!skb_make_writable(e->skb, v->data_len))
return -ENOMEM;
skb_copy_to_linear_data(e->skb, v->payload, v->data_len);
e->skb->ip_summed = CHECKSUM_NONE;
return 0;
}
static int
ipq_set_verdict(struct ipq_verdict_msg *vmsg, unsigned int len)
{
struct nf_queue_entry *entry;
if (vmsg->value > NF_MAX_VERDICT || vmsg->value == NF_STOLEN)
return -EINVAL;
entry = ipq_find_dequeue_entry(vmsg->id);
if (entry == NULL)
return -ENOENT;
else {
int verdict = vmsg->value;
if (vmsg->data_len && vmsg->data_len == len)
if (ipq_mangle_ipv4(vmsg, entry) < 0)
verdict = NF_DROP;
nf_reinject(entry, verdict);
return 0;
}
}
static int
ipq_set_mode(unsigned char mode, unsigned int range)
{
int status;
spin_lock_bh(&queue_lock);
status = __ipq_set_mode(mode, range);
spin_unlock_bh(&queue_lock);
return status;
}
static int
ipq_receive_peer(struct ipq_peer_msg *pmsg,
unsigned char type, unsigned int len)
{
int status = 0;
if (len < sizeof(*pmsg))
return -EINVAL;
switch (type) {
case IPQM_MODE:
status = ipq_set_mode(pmsg->msg.mode.value,
pmsg->msg.mode.range);
break;
case IPQM_VERDICT:
status = ipq_set_verdict(&pmsg->msg.verdict,
len - sizeof(*pmsg));
break;
default:
status = -EINVAL;
}
return status;
}
static int
dev_cmp(struct nf_queue_entry *entry, unsigned long ifindex)
{
if (entry->indev)
if (entry->indev->ifindex == ifindex)
return 1;
if (entry->outdev)
if (entry->outdev->ifindex == ifindex)
return 1;
#ifdef CONFIG_BRIDGE_NETFILTER
if (entry->skb->nf_bridge) {
if (entry->skb->nf_bridge->physindev &&
entry->skb->nf_bridge->physindev->ifindex == ifindex)
return 1;
if (entry->skb->nf_bridge->physoutdev &&
entry->skb->nf_bridge->physoutdev->ifindex == ifindex)
return 1;
}
#endif
return 0;
}
static void
ipq_dev_drop(int ifindex)
{
ipq_flush(dev_cmp, ifindex);
}
#define RCV_SKB_FAIL(err) do { netlink_ack(skb, nlh, (err)); return; } while (0)
static inline void
__ipq_rcv_skb(struct sk_buff *skb)
{
int status, type, pid, flags;
unsigned int nlmsglen, skblen;
struct nlmsghdr *nlh;
bool enable_timestamp = false;
skblen = skb->len;
if (skblen < sizeof(*nlh))
return;
nlh = nlmsg_hdr(skb);
nlmsglen = nlh->nlmsg_len;
if (nlmsglen < sizeof(*nlh) || skblen < nlmsglen)
return;
pid = nlh->nlmsg_pid;
flags = nlh->nlmsg_flags;
if(pid <= 0 || !(flags & NLM_F_REQUEST) || flags & NLM_F_MULTI)
RCV_SKB_FAIL(-EINVAL);
if (flags & MSG_TRUNC)
RCV_SKB_FAIL(-ECOMM);
type = nlh->nlmsg_type;
if (type < NLMSG_NOOP || type >= IPQM_MAX)
RCV_SKB_FAIL(-EINVAL);
if (type <= IPQM_BASE)
return;
if (!capable(CAP_NET_ADMIN))
RCV_SKB_FAIL(-EPERM);
spin_lock_bh(&queue_lock);
if (peer_pid) {
if (peer_pid != pid) {
spin_unlock_bh(&queue_lock);
RCV_SKB_FAIL(-EBUSY);
}
} else {
enable_timestamp = true;
peer_pid = pid;
}
spin_unlock_bh(&queue_lock);
if (enable_timestamp)
net_enable_timestamp();
status = ipq_receive_peer(NLMSG_DATA(nlh), type,
nlmsglen - NLMSG_LENGTH(0));
if (status < 0)
RCV_SKB_FAIL(status);
if (flags & NLM_F_ACK)
netlink_ack(skb, nlh, 0);
}
static void
ipq_rcv_skb(struct sk_buff *skb)
{
mutex_lock(&ipqnl_mutex);
__ipq_rcv_skb(skb);
mutex_unlock(&ipqnl_mutex);
}
static int
ipq_rcv_dev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct net_device *dev = ptr;
if (!net_eq(dev_net(dev), &init_net))
return NOTIFY_DONE;
/* Drop any packets associated with the downed device */
if (event == NETDEV_DOWN)
ipq_dev_drop(dev->ifindex);
return NOTIFY_DONE;
}
static struct notifier_block ipq_dev_notifier = {
.notifier_call = ipq_rcv_dev_event,
};
static int
ipq_rcv_nl_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct netlink_notify *n = ptr;
if (event == NETLINK_URELEASE && n->protocol == NETLINK_FIREWALL) {
spin_lock_bh(&queue_lock);
if ((net_eq(n->net, &init_net)) && (n->pid == peer_pid))
__ipq_reset();
spin_unlock_bh(&queue_lock);
}
return NOTIFY_DONE;
}
static struct notifier_block ipq_nl_notifier = {
.notifier_call = ipq_rcv_nl_event,
};
#ifdef CONFIG_SYSCTL
static struct ctl_table_header *ipq_sysctl_header;
static ctl_table ipq_table[] = {
{
.procname = NET_IPQ_QMAX_NAME,
.data = &queue_maxlen,
.maxlen = sizeof(queue_maxlen),
.mode = 0644,
.proc_handler = proc_dointvec
},
{ }
};
#endif
#ifdef CONFIG_PROC_FS
static int ip_queue_show(struct seq_file *m, void *v)
{
spin_lock_bh(&queue_lock);
seq_printf(m,
"Peer PID : %d\n"
"Copy mode : %hu\n"
"Copy range : %u\n"
"Queue length : %u\n"
"Queue max. length : %u\n"
"Queue dropped : %u\n"
"Netlink dropped : %u\n",
peer_pid,
copy_mode,
copy_range,
queue_total,
queue_maxlen,
queue_dropped,
queue_user_dropped);
spin_unlock_bh(&queue_lock);
return 0;
}
static int ip_queue_open(struct inode *inode, struct file *file)
{
return single_open(file, ip_queue_show, NULL);
}
static const struct file_operations ip_queue_proc_fops = {
.open = ip_queue_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
#endif
static const struct nf_queue_handler nfqh = {
.name = "ip_queue",
.outfn = &ipq_enqueue_packet,
};
static int __init ip_queue_init(void)
{
int status = -ENOMEM;
struct proc_dir_entry *proc __maybe_unused;
netlink_register_notifier(&ipq_nl_notifier);
ipqnl = netlink_kernel_create(&init_net, NETLINK_FIREWALL, 0,
ipq_rcv_skb, NULL, THIS_MODULE);
if (ipqnl == NULL) {
printk(KERN_ERR "ip_queue: failed to create netlink socket\n");
goto cleanup_netlink_notifier;
}
#ifdef CONFIG_PROC_FS
proc = proc_create(IPQ_PROC_FS_NAME, 0, init_net.proc_net,
&ip_queue_proc_fops);
if (!proc) {
printk(KERN_ERR "ip_queue: failed to create proc entry\n");
goto cleanup_ipqnl;
}
#endif
register_netdevice_notifier(&ipq_dev_notifier);
#ifdef CONFIG_SYSCTL
ipq_sysctl_header = register_net_sysctl(&init_net, "net/ipv4", ipq_table);
#endif
status = nf_register_queue_handler(NFPROTO_IPV4, &nfqh);
if (status < 0) {
printk(KERN_ERR "ip_queue: failed to register queue handler\n");
goto cleanup_sysctl;
}
return status;
cleanup_sysctl:
#ifdef CONFIG_SYSCTL
unregister_net_sysctl_table(ipq_sysctl_header);
#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
cleanup_ipqnl: __maybe_unused
netlink_kernel_release(ipqnl);
mutex_lock(&ipqnl_mutex);
mutex_unlock(&ipqnl_mutex);
cleanup_netlink_notifier:
netlink_unregister_notifier(&ipq_nl_notifier);
return status;
}
static void __exit ip_queue_fini(void)
{
nf_unregister_queue_handlers(&nfqh);
ipq_flush(NULL, 0);
#ifdef CONFIG_SYSCTL
unregister_net_sysctl_table(ipq_sysctl_header);
#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
netlink_kernel_release(ipqnl);
mutex_lock(&ipqnl_mutex);
mutex_unlock(&ipqnl_mutex);
netlink_unregister_notifier(&ipq_nl_notifier);
}
MODULE_DESCRIPTION("IPv4 packet queue handler");
MODULE_AUTHOR("James Morris <jmorris@intercode.com.au>");
MODULE_LICENSE("GPL");
MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_FIREWALL);
module_init(ip_queue_init);
module_exit(ip_queue_fini);

22
net/ipv6/netfilter/Kconfig
Просмотреть файл

@ -25,28 +25,6 @@ config NF_CONNTRACK_IPV6
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_QUEUE
tristate "IP6 Userspace queueing via NETLINK (OBSOLETE)"
depends on INET && IPV6 && NETFILTER
depends on NETFILTER_ADVANCED
---help---
This option adds a queue handler to the kernel for IPv6
packets which enables users to receive the filtered packets
with QUEUE target using libipq.
This option enables the old IPv6-only "ip6_queue" implementation
which has been obsoleted by the new "nfnetlink_queue" code (see
CONFIG_NETFILTER_NETLINK_QUEUE).
(C) Fernando Anton 2001
IPv64 Project - Work based in IPv64 draft by Arturo Azcorra.
Universidad Carlos III de Madrid
Universidad Politecnica de Alcala de Henares
email: <fanton@it.uc3m.es>.
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_IPTABLES
tristate "IP6 tables support (required for filtering)"
depends on INET && IPV6

1
net/ipv6/netfilter/Makefile
Просмотреть файл

@ -6,7 +6,6 @@
obj-$(CONFIG_IP6_NF_IPTABLES) += ip6_tables.o
obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o

641
net/ipv6/netfilter/ip6_queue.c
Просмотреть файл

@ -1,641 +0,0 @@
/*
* This is a module which is used for queueing IPv6 packets and
* communicating with userspace via netlink.
*
* (C) 2001 Fernando Anton, this code is GPL.
* IPv64 Project - Work based in IPv64 draft by Arturo Azcorra.
* Universidad Carlos III de Madrid - Leganes (Madrid) - Spain
* Universidad Politecnica de Alcala de Henares - Alcala de H. (Madrid) - Spain
* email: fanton@it.uc3m.es
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/ipv6.h>
#include <linux/notifier.h>
#include <linux/netdevice.h>
#include <linux/netfilter.h>
#include <linux/netlink.h>
#include <linux/spinlock.h>
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <net/netfilter/nf_queue.h>
#include <linux/netfilter_ipv4/ip_queue.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter_ipv6/ip6_tables.h>
#define IPQ_QMAX_DEFAULT 1024
#define IPQ_PROC_FS_NAME "ip6_queue"
#define NET_IPQ_QMAX_NAME "ip6_queue_maxlen"
typedef int (*ipq_cmpfn)(struct nf_queue_entry *, unsigned long);
static unsigned char copy_mode __read_mostly = IPQ_COPY_NONE;
static unsigned int queue_maxlen __read_mostly = IPQ_QMAX_DEFAULT;
static DEFINE_SPINLOCK(queue_lock);
static int peer_pid __read_mostly;
static unsigned int copy_range __read_mostly;
static unsigned int queue_total;
static unsigned int queue_dropped = 0;
static unsigned int queue_user_dropped = 0;
static struct sock *ipqnl __read_mostly;
static LIST_HEAD(queue_list);
static DEFINE_MUTEX(ipqnl_mutex);
static inline void
__ipq_enqueue_entry(struct nf_queue_entry *entry)
{
list_add_tail(&entry->list, &queue_list);
queue_total++;
}
static inline int
__ipq_set_mode(unsigned char mode, unsigned int range)
{
int status = 0;
switch(mode) {
case IPQ_COPY_NONE:
case IPQ_COPY_META:
copy_mode = mode;
copy_range = 0;
break;
case IPQ_COPY_PACKET:
if (range > 0xFFFF)
range = 0xFFFF;
copy_range = range;
copy_mode = mode;
break;
default:
status = -EINVAL;
}
return status;
}
static void __ipq_flush(ipq_cmpfn cmpfn, unsigned long data);
static inline void
__ipq_reset(void)
{
peer_pid = 0;
net_disable_timestamp();
__ipq_set_mode(IPQ_COPY_NONE, 0);
__ipq_flush(NULL, 0);
}
static struct nf_queue_entry *
ipq_find_dequeue_entry(unsigned long id)
{
struct nf_queue_entry *entry = NULL, *i;
spin_lock_bh(&queue_lock);
list_for_each_entry(i, &queue_list, list) {
if ((unsigned long)i == id) {
entry = i;
break;
}
}
if (entry) {
list_del(&entry->list);
queue_total--;
}
spin_unlock_bh(&queue_lock);
return entry;
}
static void
__ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
{
struct nf_queue_entry *entry, *next;
list_for_each_entry_safe(entry, next, &queue_list, list) {
if (!cmpfn || cmpfn(entry, data)) {
list_del(&entry->list);
queue_total--;
nf_reinject(entry, NF_DROP);
}
}
}
static void
ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
{
spin_lock_bh(&queue_lock);
__ipq_flush(cmpfn, data);
spin_unlock_bh(&queue_lock);
}
static struct sk_buff *
ipq_build_packet_message(struct nf_queue_entry *entry, int *errp)
{
sk_buff_data_t old_tail;
size_t size = 0;
size_t data_len = 0;
struct sk_buff *skb;
struct ipq_packet_msg *pmsg;
struct nlmsghdr *nlh;
struct timeval tv;
switch (ACCESS_ONCE(copy_mode)) {
case IPQ_COPY_META:
case IPQ_COPY_NONE:
size = NLMSG_SPACE(sizeof(*pmsg));
break;
case IPQ_COPY_PACKET:
if (entry->skb->ip_summed == CHECKSUM_PARTIAL &&
(*errp = skb_checksum_help(entry->skb)))
return NULL;
data_len = ACCESS_ONCE(copy_range);
if (data_len == 0 || data_len > entry->skb->len)
data_len = entry->skb->len;
size = NLMSG_SPACE(sizeof(*pmsg) + data_len);
break;
default:
*errp = -EINVAL;
return NULL;
}
skb = alloc_skb(size, GFP_ATOMIC);
if (!skb)
goto nlmsg_failure;
old_tail = skb->tail;
nlh = NLMSG_PUT(skb, 0, 0, IPQM_PACKET, size - sizeof(*nlh));
pmsg = NLMSG_DATA(nlh);
memset(pmsg, 0, sizeof(*pmsg));
pmsg->packet_id = (unsigned long )entry;
pmsg->data_len = data_len;
tv = ktime_to_timeval(entry->skb->tstamp);
pmsg->timestamp_sec = tv.tv_sec;
pmsg->timestamp_usec = tv.tv_usec;
pmsg->mark = entry->skb->mark;
pmsg->hook = entry->hook;
pmsg->hw_protocol = entry->skb->protocol;
if (entry->indev)
strcpy(pmsg->indev_name, entry->indev->name);
else
pmsg->indev_name[0] = '\0';
if (entry->outdev)
strcpy(pmsg->outdev_name, entry->outdev->name);
else
pmsg->outdev_name[0] = '\0';
if (entry->indev && entry->skb->dev &&
entry->skb->mac_header != entry->skb->network_header) {
pmsg->hw_type = entry->skb->dev->type;
pmsg->hw_addrlen = dev_parse_header(entry->skb, pmsg->hw_addr);
}
if (data_len)
if (skb_copy_bits(entry->skb, 0, pmsg->payload, data_len))
BUG();
nlh->nlmsg_len = skb->tail - old_tail;
return skb;
nlmsg_failure:
kfree_skb(skb);
*errp = -EINVAL;
printk(KERN_ERR "ip6_queue: error creating packet message\n");
return NULL;
}
static int
ipq_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
{
int status = -EINVAL;
struct sk_buff *nskb;
if (copy_mode == IPQ_COPY_NONE)
return -EAGAIN;
nskb = ipq_build_packet_message(entry, &status);
if (nskb == NULL)
return status;
spin_lock_bh(&queue_lock);
if (!peer_pid)
goto err_out_free_nskb;
if (queue_total >= queue_maxlen) {
queue_dropped++;
status = -ENOSPC;
if (net_ratelimit())
printk (KERN_WARNING "ip6_queue: fill at %d entries, "
"dropping packet(s). Dropped: %d\n", queue_total,
queue_dropped);
goto err_out_free_nskb;
}
/* netlink_unicast will either free the nskb or attach it to a socket */
status = netlink_unicast(ipqnl, nskb, peer_pid, MSG_DONTWAIT);
if (status < 0) {
queue_user_dropped++;
goto err_out_unlock;
}
__ipq_enqueue_entry(entry);
spin_unlock_bh(&queue_lock);
return status;
err_out_free_nskb:
kfree_skb(nskb);
err_out_unlock:
spin_unlock_bh(&queue_lock);
return status;
}
static int
ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct nf_queue_entry *e)
{
int diff;
struct ipv6hdr *user_iph = (struct ipv6hdr *)v->payload;
struct sk_buff *nskb;
if (v->data_len < sizeof(*user_iph))
return 0;
diff = v->data_len - e->skb->len;
if (diff < 0) {
if (pskb_trim(e->skb, v->data_len))
return -ENOMEM;
} else if (diff > 0) {
if (v->data_len > 0xFFFF)
return -EINVAL;
if (diff > skb_tailroom(e->skb)) {
nskb = skb_copy_expand(e->skb, skb_headroom(e->skb),
diff, GFP_ATOMIC);
if (!nskb) {
printk(KERN_WARNING "ip6_queue: OOM "
"in mangle, dropping packet\n");
return -ENOMEM;
}
kfree_skb(e->skb);
e->skb = nskb;
}
skb_put(e->skb, diff);
}
if (!skb_make_writable(e->skb, v->data_len))
return -ENOMEM;
skb_copy_to_linear_data(e->skb, v->payload, v->data_len);
e->skb->ip_summed = CHECKSUM_NONE;
return 0;
}
static int
ipq_set_verdict(struct ipq_verdict_msg *vmsg, unsigned int len)
{
struct nf_queue_entry *entry;
if (vmsg->value > NF_MAX_VERDICT || vmsg->value == NF_STOLEN)
return -EINVAL;
entry = ipq_find_dequeue_entry(vmsg->id);
if (entry == NULL)
return -ENOENT;
else {
int verdict = vmsg->value;
if (vmsg->data_len && vmsg->data_len == len)
if (ipq_mangle_ipv6(vmsg, entry) < 0)
verdict = NF_DROP;
nf_reinject(entry, verdict);
return 0;
}
}
static int
ipq_set_mode(unsigned char mode, unsigned int range)
{
int status;
spin_lock_bh(&queue_lock);
status = __ipq_set_mode(mode, range);
spin_unlock_bh(&queue_lock);
return status;
}
static int
ipq_receive_peer(struct ipq_peer_msg *pmsg,
unsigned char type, unsigned int len)
{
int status = 0;
if (len < sizeof(*pmsg))
return -EINVAL;
switch (type) {
case IPQM_MODE:
status = ipq_set_mode(pmsg->msg.mode.value,
pmsg->msg.mode.range);
break;
case IPQM_VERDICT:
status = ipq_set_verdict(&pmsg->msg.verdict,
len - sizeof(*pmsg));
break;
default:
status = -EINVAL;
}
return status;
}
static int
dev_cmp(struct nf_queue_entry *entry, unsigned long ifindex)
{
if (entry->indev)
if (entry->indev->ifindex == ifindex)
return 1;
if (entry->outdev)
if (entry->outdev->ifindex == ifindex)
return 1;
#ifdef CONFIG_BRIDGE_NETFILTER
if (entry->skb->nf_bridge) {
if (entry->skb->nf_bridge->physindev &&
entry->skb->nf_bridge->physindev->ifindex == ifindex)
return 1;
if (entry->skb->nf_bridge->physoutdev &&
entry->skb->nf_bridge->physoutdev->ifindex == ifindex)
return 1;
}
#endif
return 0;
}
static void
ipq_dev_drop(int ifindex)
{
ipq_flush(dev_cmp, ifindex);
}
#define RCV_SKB_FAIL(err) do { netlink_ack(skb, nlh, (err)); return; } while (0)
static inline void
__ipq_rcv_skb(struct sk_buff *skb)
{
int status, type, pid, flags;
unsigned int nlmsglen, skblen;
struct nlmsghdr *nlh;
bool enable_timestamp = false;
skblen = skb->len;
if (skblen < sizeof(*nlh))
return;
nlh = nlmsg_hdr(skb);
nlmsglen = nlh->nlmsg_len;
if (nlmsglen < sizeof(*nlh) || skblen < nlmsglen)
return;
pid = nlh->nlmsg_pid;
flags = nlh->nlmsg_flags;
if(pid <= 0 || !(flags & NLM_F_REQUEST) || flags & NLM_F_MULTI)
RCV_SKB_FAIL(-EINVAL);
if (flags & MSG_TRUNC)
RCV_SKB_FAIL(-ECOMM);
type = nlh->nlmsg_type;
if (type < NLMSG_NOOP || type >= IPQM_MAX)
RCV_SKB_FAIL(-EINVAL);
if (type <= IPQM_BASE)
return;
if (!capable(CAP_NET_ADMIN))
RCV_SKB_FAIL(-EPERM);
spin_lock_bh(&queue_lock);
if (peer_pid) {
if (peer_pid != pid) {
spin_unlock_bh(&queue_lock);
RCV_SKB_FAIL(-EBUSY);
}
} else {
enable_timestamp = true;
peer_pid = pid;
}
spin_unlock_bh(&queue_lock);
if (enable_timestamp)
net_enable_timestamp();
status = ipq_receive_peer(NLMSG_DATA(nlh), type,
nlmsglen - NLMSG_LENGTH(0));
if (status < 0)
RCV_SKB_FAIL(status);
if (flags & NLM_F_ACK)
netlink_ack(skb, nlh, 0);
}
static void
ipq_rcv_skb(struct sk_buff *skb)
{
mutex_lock(&ipqnl_mutex);
__ipq_rcv_skb(skb);
mutex_unlock(&ipqnl_mutex);
}
static int
ipq_rcv_dev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct net_device *dev = ptr;
if (!net_eq(dev_net(dev), &init_net))
return NOTIFY_DONE;
/* Drop any packets associated with the downed device */
if (event == NETDEV_DOWN)
ipq_dev_drop(dev->ifindex);
return NOTIFY_DONE;
}
static struct notifier_block ipq_dev_notifier = {
.notifier_call = ipq_rcv_dev_event,
};
static int
ipq_rcv_nl_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct netlink_notify *n = ptr;
if (event == NETLINK_URELEASE && n->protocol == NETLINK_IP6_FW) {
spin_lock_bh(&queue_lock);
if ((net_eq(n->net, &init_net)) && (n->pid == peer_pid))
__ipq_reset();
spin_unlock_bh(&queue_lock);
}
return NOTIFY_DONE;
}
static struct notifier_block ipq_nl_notifier = {
.notifier_call = ipq_rcv_nl_event,
};
#ifdef CONFIG_SYSCTL
static struct ctl_table_header *ipq_sysctl_header;
static ctl_table ipq_table[] = {
{
.procname = NET_IPQ_QMAX_NAME,
.data = &queue_maxlen,
.maxlen = sizeof(queue_maxlen),
.mode = 0644,
.proc_handler = proc_dointvec
},
{ }
};
#endif
#ifdef CONFIG_PROC_FS
static int ip6_queue_show(struct seq_file *m, void *v)
{
spin_lock_bh(&queue_lock);
seq_printf(m,
"Peer PID : %d\n"
"Copy mode : %hu\n"
"Copy range : %u\n"
"Queue length : %u\n"
"Queue max. length : %u\n"
"Queue dropped : %u\n"
"Netfilter dropped : %u\n",
peer_pid,
copy_mode,
copy_range,
queue_total,
queue_maxlen,
queue_dropped,
queue_user_dropped);
spin_unlock_bh(&queue_lock);
return 0;
}
static int ip6_queue_open(struct inode *inode, struct file *file)
{
return single_open(file, ip6_queue_show, NULL);
}
static const struct file_operations ip6_queue_proc_fops = {
.open = ip6_queue_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
#endif
static const struct nf_queue_handler nfqh = {
.name = "ip6_queue",
.outfn = &ipq_enqueue_packet,
};
static int __init ip6_queue_init(void)
{
int status = -ENOMEM;
struct proc_dir_entry *proc __maybe_unused;
netlink_register_notifier(&ipq_nl_notifier);
ipqnl = netlink_kernel_create(&init_net, NETLINK_IP6_FW, 0,
ipq_rcv_skb, NULL, THIS_MODULE);
if (ipqnl == NULL) {
printk(KERN_ERR "ip6_queue: failed to create netlink socket\n");
goto cleanup_netlink_notifier;
}
#ifdef CONFIG_PROC_FS
proc = proc_create(IPQ_PROC_FS_NAME, 0, init_net.proc_net,
&ip6_queue_proc_fops);
if (!proc) {
printk(KERN_ERR "ip6_queue: failed to create proc entry\n");
goto cleanup_ipqnl;
}
#endif
register_netdevice_notifier(&ipq_dev_notifier);
#ifdef CONFIG_SYSCTL
ipq_sysctl_header = register_net_sysctl(&init_net, "net/ipv6", ipq_table);
#endif
status = nf_register_queue_handler(NFPROTO_IPV6, &nfqh);
if (status < 0) {
printk(KERN_ERR "ip6_queue: failed to register queue handler\n");
goto cleanup_sysctl;
}
return status;
cleanup_sysctl:
#ifdef CONFIG_SYSCTL
unregister_net_sysctl_table(ipq_sysctl_header);
#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
cleanup_ipqnl: __maybe_unused
netlink_kernel_release(ipqnl);
mutex_lock(&ipqnl_mutex);
mutex_unlock(&ipqnl_mutex);
cleanup_netlink_notifier:
netlink_unregister_notifier(&ipq_nl_notifier);
return status;
}
static void __exit ip6_queue_fini(void)
{
nf_unregister_queue_handlers(&nfqh);
ipq_flush(NULL, 0);
#ifdef CONFIG_SYSCTL
unregister_net_sysctl_table(ipq_sysctl_header);
#endif
unregister_netdevice_notifier(&ipq_dev_notifier);
proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
netlink_kernel_release(ipqnl);
mutex_lock(&ipqnl_mutex);
mutex_unlock(&ipqnl_mutex);
netlink_unregister_notifier(&ipq_nl_notifier);
}
MODULE_DESCRIPTION("IPv6 packet queue handler");
MODULE_LICENSE("GPL");
MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_IP6_FW);
module_init(ip6_queue_init);
module_exit(ip6_queue_fini);

64
net/netfilter/ipvs/ip_vs_conn.c
Просмотреть файл

@ -548,6 +548,7 @@ static inline void
ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest)
{
unsigned int conn_flags;
__u32 flags;
/* if dest is NULL, then return directly */
if (!dest)
@ -559,17 +560,19 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest)
conn_flags = atomic_read(&dest->conn_flags);
if (cp->protocol != IPPROTO_UDP)
conn_flags &= ~IP_VS_CONN_F_ONE_PACKET;
flags = cp->flags;
/* Bind with the destination and its corresponding transmitter */
if (cp->flags & IP_VS_CONN_F_SYNC) {
if (flags & IP_VS_CONN_F_SYNC) {
/* if the connection is not template and is created
* by sync, preserve the activity flag.
*/
if (!(cp->flags & IP_VS_CONN_F_TEMPLATE))
if (!(flags & IP_VS_CONN_F_TEMPLATE))
conn_flags &= ~IP_VS_CONN_F_INACTIVE;
/* connections inherit forwarding method from dest */
cp->flags &= ~IP_VS_CONN_F_FWD_MASK;
flags &= ~(IP_VS_CONN_F_FWD_MASK | IP_VS_CONN_F_NOOUTPUT);
}
cp->flags |= conn_flags;
flags |= conn_flags;
cp->flags = flags;
cp->dest = dest;
IP_VS_DBG_BUF(7, "Bind-dest %s c:%s:%d v:%s:%d "
@ -584,12 +587,12 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest)
atomic_read(&dest->refcnt));
/* Update the connection counters */
if (!(cp->flags & IP_VS_CONN_F_TEMPLATE)) {
/* It is a normal connection, so increase the inactive
connection counter because it is in TCP SYNRECV
state (inactive) or other protocol inacive state */
if ((cp->flags & IP_VS_CONN_F_SYNC) &&
(!(cp->flags & IP_VS_CONN_F_INACTIVE)))
if (!(flags & IP_VS_CONN_F_TEMPLATE)) {
/* It is a normal connection, so modify the counters
* according to the flags, later the protocol can
* update them on state change
*/
if (!(flags & IP_VS_CONN_F_INACTIVE))
atomic_inc(&dest->activeconns);
else
atomic_inc(&dest->inactconns);
@ -613,14 +616,40 @@ struct ip_vs_dest *ip_vs_try_bind_dest(struct ip_vs_conn *cp)
{
struct ip_vs_dest *dest;
if ((cp) && (!cp->dest)) {
dest = ip_vs_find_dest(ip_vs_conn_net(cp), cp->af, &cp->daddr,
cp->dport, &cp->vaddr, cp->vport,
cp->protocol, cp->fwmark, cp->flags);
ip_vs_bind_dest(cp, dest);
if (dest) {
struct ip_vs_proto_data *pd;
spin_lock(&cp->lock);
if (cp->dest) {
spin_unlock(&cp->lock);
return dest;
}
/* Applications work depending on the forwarding method
* but better to reassign them always when binding dest */
if (cp->app)
ip_vs_unbind_app(cp);
ip_vs_bind_dest(cp, dest);
spin_unlock(&cp->lock);
/* Update its packet transmitter */
cp->packet_xmit = NULL;
#ifdef CONFIG_IP_VS_IPV6
if (cp->af == AF_INET6)
ip_vs_bind_xmit_v6(cp);
else
#endif
ip_vs_bind_xmit(cp);
pd = ip_vs_proto_data_get(ip_vs_conn_net(cp), cp->protocol);
if (pd && atomic_read(&pd->appcnt))
ip_vs_bind_app(cp, pd->pp);
}
return dest;
} else
return NULL;
}
@ -743,7 +772,8 @@ int ip_vs_check_template(struct ip_vs_conn *ct)
static void ip_vs_conn_expire(unsigned long data)
{
struct ip_vs_conn *cp = (struct ip_vs_conn *)data;
struct netns_ipvs *ipvs = net_ipvs(ip_vs_conn_net(cp));
struct net *net = ip_vs_conn_net(cp);
struct netns_ipvs *ipvs = net_ipvs(net);
cp->timeout = 60*HZ;
@ -808,6 +838,9 @@ static void ip_vs_conn_expire(unsigned long data)
atomic_read(&cp->refcnt)-1,
atomic_read(&cp->n_control));
if (ipvs->sync_state & IP_VS_STATE_MASTER)
ip_vs_sync_conn(net, cp, sysctl_sync_threshold(ipvs));
ip_vs_conn_put(cp);
}
@ -881,6 +914,7 @@ ip_vs_conn_new(const struct ip_vs_conn_param *p,
/* Set its state and timeout */
cp->state = 0;
cp->timeout = 3*HZ;
cp->sync_endtime = jiffies & ~3UL;
/* Bind its packet transmitter */
#ifdef CONFIG_IP_VS_IPV6

30
net/netfilter/ipvs/ip_vs_core.c
Просмотреть файл

@ -1613,34 +1613,8 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
else
pkts = atomic_add_return(1, &cp->in_pkts);
if ((ipvs->sync_state & IP_VS_STATE_MASTER) &&
cp->protocol == IPPROTO_SCTP) {
if ((cp->state == IP_VS_SCTP_S_ESTABLISHED &&
(pkts % sysctl_sync_period(ipvs)
== sysctl_sync_threshold(ipvs))) ||
(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(net, cp);
goto out;
}
}
/* Keep this block last: TCP and others with pp->num_states <= 1 */
else if ((ipvs->sync_state & IP_VS_STATE_MASTER) &&
(((cp->protocol != IPPROTO_TCP ||
cp->state == IP_VS_TCP_S_ESTABLISHED) &&
(pkts % sysctl_sync_period(ipvs)
== sysctl_sync_threshold(ipvs))) ||
((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(net, cp);
out:
cp->old_state = cp->state;
if (ipvs->sync_state & IP_VS_STATE_MASTER)
ip_vs_sync_conn(net, cp, pkts);
ip_vs_conn_put(cp);
return ret;

70
net/netfilter/ipvs/ip_vs_ctl.c
Просмотреть файл

@ -1599,6 +1599,10 @@ static int ip_vs_zero_all(struct net *net)
}
#ifdef CONFIG_SYSCTL
static int zero;
static int three = 3;
static int
proc_do_defense_mode(ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
@ -1632,7 +1636,8 @@ proc_do_sync_threshold(ctl_table *table, int write,
memcpy(val, valp, sizeof(val));
rc = proc_dointvec(table, write, buffer, lenp, ppos);
if (write && (valp[0] < 0 || valp[1] < 0 || valp[0] >= valp[1])) {
if (write && (valp[0] < 0 || valp[1] < 0 ||
(valp[0] >= valp[1] && valp[1]))) {
/* Restore the correct value */
memcpy(valp, val, sizeof(val));
}
@ -1652,9 +1657,24 @@ proc_do_sync_mode(ctl_table *table, int write,
if ((*valp < 0) || (*valp > 1)) {
/* Restore the correct value */
*valp = val;
} else {
struct net *net = current->nsproxy->net_ns;
ip_vs_sync_switch_mode(net, val);
}
}
return rc;
}
static int
proc_do_sync_ports(ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = table->data;
int val = *valp;
int rc;
rc = proc_dointvec(table, write, buffer, lenp, ppos);
if (write && (*valp != val)) {
if (*valp < 1 || !is_power_of_2(*valp)) {
/* Restore the correct value */
*valp = val;
}
}
return rc;
@ -1717,6 +1737,24 @@ static struct ctl_table vs_vars[] = {
.mode = 0644,
.proc_handler = &proc_do_sync_mode,
},
{
.procname = "sync_ports",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_do_sync_ports,
},
{
.procname = "sync_qlen_max",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "sync_sock_size",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "cache_bypass",
.maxlen = sizeof(int),
@ -1742,6 +1780,20 @@ static struct ctl_table vs_vars[] = {
.mode = 0644,
.proc_handler = proc_do_sync_threshold,
},
{
.procname = "sync_refresh_period",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "sync_retries",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &zero,
.extra2 = &three,
},
{
.procname = "nat_icmp_send",
.maxlen = sizeof(int),
@ -3655,6 +3707,12 @@ int __net_init ip_vs_control_net_init_sysctl(struct net *net)
tbl[idx++].data = &ipvs->sysctl_snat_reroute;
ipvs->sysctl_sync_ver = 1;
tbl[idx++].data = &ipvs->sysctl_sync_ver;
ipvs->sysctl_sync_ports = 1;
tbl[idx++].data = &ipvs->sysctl_sync_ports;
ipvs->sysctl_sync_qlen_max = nr_free_buffer_pages() / 32;
tbl[idx++].data = &ipvs->sysctl_sync_qlen_max;
ipvs->sysctl_sync_sock_size = 0;
tbl[idx++].data = &ipvs->sysctl_sync_sock_size;
tbl[idx++].data = &ipvs->sysctl_cache_bypass;
tbl[idx++].data = &ipvs->sysctl_expire_nodest_conn;
tbl[idx++].data = &ipvs->sysctl_expire_quiescent_template;
@ -3662,6 +3720,10 @@ int __net_init ip_vs_control_net_init_sysctl(struct net *net)
ipvs->sysctl_sync_threshold[1] = DEFAULT_SYNC_PERIOD;
tbl[idx].data = &ipvs->sysctl_sync_threshold;
tbl[idx++].maxlen = sizeof(ipvs->sysctl_sync_threshold);
ipvs->sysctl_sync_refresh_period = DEFAULT_SYNC_REFRESH_PERIOD;
tbl[idx++].data = &ipvs->sysctl_sync_refresh_period;
ipvs->sysctl_sync_retries = clamp_t(int, DEFAULT_SYNC_RETRIES, 0, 3);
tbl[idx++].data = &ipvs->sysctl_sync_retries;
tbl[idx++].data = &ipvs->sysctl_nat_icmp_send;

2
net/netfilter/ipvs/ip_vs_dh.c
Просмотреть файл

@ -149,7 +149,7 @@ static int ip_vs_dh_init_svc(struct ip_vs_service *svc)
/* allocate the DH table for this service */
tbl = kmalloc(sizeof(struct ip_vs_dh_bucket)*IP_VS_DH_TAB_SIZE,
GFP_ATOMIC);
GFP_KERNEL);
if (tbl == NULL)
return -ENOMEM;

2
net/netfilter/ipvs/ip_vs_ftp.c
Просмотреть файл

@ -485,7 +485,7 @@ static struct pernet_operations ip_vs_ftp_ops = {
.exit = __ip_vs_ftp_exit,
};
int __init ip_vs_ftp_init(void)
static int __init ip_vs_ftp_init(void)
{
int rv;

2
net/netfilter/ipvs/ip_vs_lblc.c
Просмотреть файл

@ -342,7 +342,7 @@ static int ip_vs_lblc_init_svc(struct ip_vs_service *svc)
/*
* Allocate the ip_vs_lblc_table for this service
*/
tbl = kmalloc(sizeof(*tbl), GFP_ATOMIC);
tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
if (tbl == NULL)
return -ENOMEM;

2
net/netfilter/ipvs/ip_vs_lblcr.c
Просмотреть файл

@ -511,7 +511,7 @@ static int ip_vs_lblcr_init_svc(struct ip_vs_service *svc)
/*
* Allocate the ip_vs_lblcr_table for this service
*/
tbl = kmalloc(sizeof(*tbl), GFP_ATOMIC);
tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
if (tbl == NULL)
return -ENOMEM;

6
net/netfilter/ipvs/ip_vs_proto.c
Просмотреть файл

@ -68,7 +68,7 @@ register_ip_vs_proto_netns(struct net *net, struct ip_vs_protocol *pp)
struct netns_ipvs *ipvs = net_ipvs(net);
unsigned int hash = IP_VS_PROTO_HASH(pp->protocol);
struct ip_vs_proto_data *pd =
kzalloc(sizeof(struct ip_vs_proto_data), GFP_ATOMIC);
kzalloc(sizeof(struct ip_vs_proto_data), GFP_KERNEL);
if (!pd)
return -ENOMEM;
@ -156,7 +156,7 @@ EXPORT_SYMBOL(ip_vs_proto_get);
/*
* get ip_vs_protocol object data by netns and proto
*/
struct ip_vs_proto_data *
static struct ip_vs_proto_data *
__ipvs_proto_data_get(struct netns_ipvs *ipvs, unsigned short proto)
{
struct ip_vs_proto_data *pd;
@ -199,7 +199,7 @@ void ip_vs_protocol_timeout_change(struct netns_ipvs *ipvs, int flags)
int *
ip_vs_create_timeout_table(int *table, int size)
{
return kmemdup(table, size, GFP_ATOMIC);
return kmemdup(table, size, GFP_KERNEL);
}

2
net/netfilter/ipvs/ip_vs_sh.c
Просмотреть файл

@ -162,7 +162,7 @@ static int ip_vs_sh_init_svc(struct ip_vs_service *svc)
/* allocate the SH table for this service */
tbl = kmalloc(sizeof(struct ip_vs_sh_bucket)*IP_VS_SH_TAB_SIZE,
GFP_ATOMIC);
GFP_KERNEL);
if (tbl == NULL)
return -ENOMEM;

642
net/netfilter/ipvs/ip_vs_sync.c
Просмотреть файл

@ -196,6 +196,7 @@ struct ip_vs_sync_thread_data {
struct net *net;
struct socket *sock;
char *buf;
int id;
};
/* Version 0 definition of packet sizes */
@ -271,13 +272,6 @@ struct ip_vs_sync_buff {
unsigned char *end;
};
/* multicast addr */
static struct sockaddr_in mcast_addr = {
.sin_family = AF_INET,
.sin_port = cpu_to_be16(IP_VS_SYNC_PORT),
.sin_addr.s_addr = cpu_to_be32(IP_VS_SYNC_GROUP),
};
/*
* Copy of struct ip_vs_seq
* From unaligned network order to aligned host order
@ -300,18 +294,22 @@ static void hton_seq(struct ip_vs_seq *ho, struct ip_vs_seq *no)
put_unaligned_be32(ho->previous_delta, &no->previous_delta);
}
static inline struct ip_vs_sync_buff *sb_dequeue(struct netns_ipvs *ipvs)
static inline struct ip_vs_sync_buff *
sb_dequeue(struct netns_ipvs *ipvs, struct ipvs_master_sync_state *ms)
{
struct ip_vs_sync_buff *sb;
spin_lock_bh(&ipvs->sync_lock);
if (list_empty(&ipvs->sync_queue)) {
if (list_empty(&ms->sync_queue)) {
sb = NULL;
__set_current_state(TASK_INTERRUPTIBLE);
} else {
sb = list_entry(ipvs->sync_queue.next,
struct ip_vs_sync_buff,
sb = list_entry(ms->sync_queue.next, struct ip_vs_sync_buff,
list);
list_del(&sb->list);
ms->sync_queue_len--;
if (!ms->sync_queue_len)
ms->sync_queue_delay = 0;
}
spin_unlock_bh(&ipvs->sync_lock);
@ -334,7 +332,7 @@ ip_vs_sync_buff_create(struct netns_ipvs *ipvs)
kfree(sb);
return NULL;
}
sb->mesg->reserved = 0; /* old nr_conns i.e. must be zeo now */
sb->mesg->reserved = 0; /* old nr_conns i.e. must be zero now */
sb->mesg->version = SYNC_PROTO_VER;
sb->mesg->syncid = ipvs->master_syncid;
sb->mesg->size = sizeof(struct ip_vs_sync_mesg);
@ -353,14 +351,22 @@ static inline void ip_vs_sync_buff_release(struct ip_vs_sync_buff *sb)
kfree(sb);
}
static inline void sb_queue_tail(struct netns_ipvs *ipvs)
static inline void sb_queue_tail(struct netns_ipvs *ipvs,
struct ipvs_master_sync_state *ms)
{
struct ip_vs_sync_buff *sb = ipvs->sync_buff;
struct ip_vs_sync_buff *sb = ms->sync_buff;
spin_lock(&ipvs->sync_lock);
if (ipvs->sync_state & IP_VS_STATE_MASTER)
list_add_tail(&sb->list, &ipvs->sync_queue);
else
if (ipvs->sync_state & IP_VS_STATE_MASTER &&
ms->sync_queue_len < sysctl_sync_qlen_max(ipvs)) {
if (!ms->sync_queue_len)
schedule_delayed_work(&ms->master_wakeup_work,
max(IPVS_SYNC_SEND_DELAY, 1));
ms->sync_queue_len++;
list_add_tail(&sb->list, &ms->sync_queue);
if ((++ms->sync_queue_delay) == IPVS_SYNC_WAKEUP_RATE)
wake_up_process(ms->master_thread);
} else
ip_vs_sync_buff_release(sb);
spin_unlock(&ipvs->sync_lock);
}
@ -370,49 +376,26 @@ static inline void sb_queue_tail(struct netns_ipvs *ipvs)
* than the specified time or the specified time is zero.
*/
static inline struct ip_vs_sync_buff *
get_curr_sync_buff(struct netns_ipvs *ipvs, unsigned long time)
get_curr_sync_buff(struct netns_ipvs *ipvs, struct ipvs_master_sync_state *ms,
unsigned long time)
{
struct ip_vs_sync_buff *sb;
spin_lock_bh(&ipvs->sync_buff_lock);
if (ipvs->sync_buff &&
time_after_eq(jiffies - ipvs->sync_buff->firstuse, time)) {
sb = ipvs->sync_buff;
ipvs->sync_buff = NULL;
sb = ms->sync_buff;
if (sb && time_after_eq(jiffies - sb->firstuse, time)) {
ms->sync_buff = NULL;
__set_current_state(TASK_RUNNING);
} else
sb = NULL;
spin_unlock_bh(&ipvs->sync_buff_lock);
return sb;
}
/*
* Switch mode from sending version 0 or 1
* - must handle sync_buf
*/
void ip_vs_sync_switch_mode(struct net *net, int mode)
static inline int
select_master_thread_id(struct netns_ipvs *ipvs, struct ip_vs_conn *cp)
{
struct netns_ipvs *ipvs = net_ipvs(net);
if (!(ipvs->sync_state & IP_VS_STATE_MASTER))
return;
if (mode == sysctl_sync_ver(ipvs) || !ipvs->sync_buff)
return;
spin_lock_bh(&ipvs->sync_buff_lock);
/* Buffer empty ? then let buf_create do the job */
if (ipvs->sync_buff->mesg->size <= sizeof(struct ip_vs_sync_mesg)) {
kfree(ipvs->sync_buff);
ipvs->sync_buff = NULL;
} else {
spin_lock_bh(&ipvs->sync_lock);
if (ipvs->sync_state & IP_VS_STATE_MASTER)
list_add_tail(&ipvs->sync_buff->list,
&ipvs->sync_queue);
else
ip_vs_sync_buff_release(ipvs->sync_buff);
spin_unlock_bh(&ipvs->sync_lock);
}
spin_unlock_bh(&ipvs->sync_buff_lock);
return ((long) cp >> (1 + ilog2(sizeof(*cp)))) & ipvs->threads_mask;
}
/*
@ -442,15 +425,101 @@ ip_vs_sync_buff_create_v0(struct netns_ipvs *ipvs)
return sb;
}
/* Check if conn should be synced.
* pkts: conn packets, use sysctl_sync_threshold to avoid packet check
* - (1) sync_refresh_period: reduce sync rate. Additionally, retry
* sync_retries times with period of sync_refresh_period/8
* - (2) if both sync_refresh_period and sync_period are 0 send sync only
* for state changes or only once when pkts matches sync_threshold
* - (3) templates: rate can be reduced only with sync_refresh_period or
* with (2)
*/
static int ip_vs_sync_conn_needed(struct netns_ipvs *ipvs,
struct ip_vs_conn *cp, int pkts)
{
unsigned long orig = ACCESS_ONCE(cp->sync_endtime);
unsigned long now = jiffies;
unsigned long n = (now + cp->timeout) & ~3UL;
unsigned int sync_refresh_period;
int sync_period;
int force;
/* Check if we sync in current state */
if (unlikely(cp->flags & IP_VS_CONN_F_TEMPLATE))
force = 0;
else if (likely(cp->protocol == IPPROTO_TCP)) {
if (!((1 << cp->state) &
((1 << IP_VS_TCP_S_ESTABLISHED) |
(1 << IP_VS_TCP_S_FIN_WAIT) |
(1 << IP_VS_TCP_S_CLOSE) |
(1 << IP_VS_TCP_S_CLOSE_WAIT) |
(1 << IP_VS_TCP_S_TIME_WAIT))))
return 0;
force = cp->state != cp->old_state;
if (force && cp->state != IP_VS_TCP_S_ESTABLISHED)
goto set;
} else if (unlikely(cp->protocol == IPPROTO_SCTP)) {
if (!((1 << cp->state) &
((1 << IP_VS_SCTP_S_ESTABLISHED) |
(1 << IP_VS_SCTP_S_CLOSED) |
(1 << IP_VS_SCTP_S_SHUT_ACK_CLI) |
(1 << IP_VS_SCTP_S_SHUT_ACK_SER))))
return 0;
force = cp->state != cp->old_state;
if (force && cp->state != IP_VS_SCTP_S_ESTABLISHED)
goto set;
} else {
/* UDP or another protocol with single state */
force = 0;
}
sync_refresh_period = sysctl_sync_refresh_period(ipvs);
if (sync_refresh_period > 0) {
long diff = n - orig;
long min_diff = max(cp->timeout >> 1, 10UL * HZ);
/* Avoid sync if difference is below sync_refresh_period
* and below the half timeout.
*/
if (abs(diff) < min_t(long, sync_refresh_period, min_diff)) {
int retries = orig & 3;
if (retries >= sysctl_sync_retries(ipvs))
return 0;
if (time_before(now, orig - cp->timeout +
(sync_refresh_period >> 3)))
return 0;
n |= retries + 1;
}
}
sync_period = sysctl_sync_period(ipvs);
if (sync_period > 0) {
if (!(cp->flags & IP_VS_CONN_F_TEMPLATE) &&
pkts % sync_period != sysctl_sync_threshold(ipvs))
return 0;
} else if (sync_refresh_period <= 0 &&
pkts != sysctl_sync_threshold(ipvs))
return 0;
set:
cp->old_state = cp->state;
n = cmpxchg(&cp->sync_endtime, orig, n);
return n == orig || force;
}
/*
* Version 0 , could be switched in by sys_ctl.
* Add an ip_vs_conn information into the current sync_buff.
*/
void ip_vs_sync_conn_v0(struct net *net, struct ip_vs_conn *cp)
static void ip_vs_sync_conn_v0(struct net *net, struct ip_vs_conn *cp,
int pkts)
{
struct netns_ipvs *ipvs = net_ipvs(net);
struct ip_vs_sync_mesg_v0 *m;
struct ip_vs_sync_conn_v0 *s;
struct ip_vs_sync_buff *buff;
struct ipvs_master_sync_state *ms;
int id;
int len;
if (unlikely(cp->af != AF_INET))
@ -459,21 +528,41 @@ void ip_vs_sync_conn_v0(struct net *net, struct ip_vs_conn *cp)
if (cp->flags & IP_VS_CONN_F_ONE_PACKET)
return;
if (!ip_vs_sync_conn_needed(ipvs, cp, pkts))
return;
spin_lock(&ipvs->sync_buff_lock);
if (!ipvs->sync_buff) {
ipvs->sync_buff =
ip_vs_sync_buff_create_v0(ipvs);
if (!ipvs->sync_buff) {
if (!(ipvs->sync_state & IP_VS_STATE_MASTER)) {
spin_unlock(&ipvs->sync_buff_lock);
return;
}
id = select_master_thread_id(ipvs, cp);
ms = &ipvs->ms[id];
buff = ms->sync_buff;
if (buff) {
m = (struct ip_vs_sync_mesg_v0 *) buff->mesg;
/* Send buffer if it is for v1 */
if (!m->nr_conns) {
sb_queue_tail(ipvs, ms);
ms->sync_buff = NULL;
buff = NULL;
}
}
if (!buff) {
buff = ip_vs_sync_buff_create_v0(ipvs);
if (!buff) {
spin_unlock(&ipvs->sync_buff_lock);
pr_err("ip_vs_sync_buff_create failed.\n");
return;
}
ms->sync_buff = buff;
}
len = (cp->flags & IP_VS_CONN_F_SEQ_MASK) ? FULL_CONN_SIZE :
SIMPLE_CONN_SIZE;
m = (struct ip_vs_sync_mesg_v0 *)ipvs->sync_buff->mesg;
s = (struct ip_vs_sync_conn_v0 *)ipvs->sync_buff->head;
m = (struct ip_vs_sync_mesg_v0 *) buff->mesg;
s = (struct ip_vs_sync_conn_v0 *) buff->head;
/* copy members */
s->reserved = 0;
@ -494,18 +583,24 @@ void ip_vs_sync_conn_v0(struct net *net, struct ip_vs_conn *cp)
m->nr_conns++;
m->size += len;
ipvs->sync_buff->head += len;
buff->head += len;
/* check if there is a space for next one */
if (ipvs->sync_buff->head + FULL_CONN_SIZE > ipvs->sync_buff->end) {
sb_queue_tail(ipvs);
ipvs->sync_buff = NULL;
if (buff->head + FULL_CONN_SIZE > buff->end) {
sb_queue_tail(ipvs, ms);
ms->sync_buff = NULL;
}
spin_unlock(&ipvs->sync_buff_lock);
/* synchronize its controller if it has */
if (cp->control)
ip_vs_sync_conn(net, cp->control);
cp = cp->control;
if (cp) {
if (cp->flags & IP_VS_CONN_F_TEMPLATE)
pkts = atomic_add_return(1, &cp->in_pkts);
else
pkts = sysctl_sync_threshold(ipvs);
ip_vs_sync_conn(net, cp->control, pkts);
}
}
/*
@ -513,23 +608,29 @@ void ip_vs_sync_conn_v0(struct net *net, struct ip_vs_conn *cp)
* Called by ip_vs_in.
* Sending Version 1 messages
*/
void ip_vs_sync_conn(struct net *net, struct ip_vs_conn *cp)
void ip_vs_sync_conn(struct net *net, struct ip_vs_conn *cp, int pkts)
{
struct netns_ipvs *ipvs = net_ipvs(net);
struct ip_vs_sync_mesg *m;
union ip_vs_sync_conn *s;
struct ip_vs_sync_buff *buff;
struct ipvs_master_sync_state *ms;
int id;
__u8 *p;
unsigned int len, pe_name_len, pad;
/* Handle old version of the protocol */
if (sysctl_sync_ver(ipvs) == 0) {
ip_vs_sync_conn_v0(net, cp);
ip_vs_sync_conn_v0(net, cp, pkts);
return;
}
/* Do not sync ONE PACKET */
if (cp->flags & IP_VS_CONN_F_ONE_PACKET)
goto control;
sloop:
if (!ip_vs_sync_conn_needed(ipvs, cp, pkts))
goto control;
/* Sanity checks */
pe_name_len = 0;
if (cp->pe_data_len) {
@ -541,6 +642,13 @@ sloop:
}
spin_lock(&ipvs->sync_buff_lock);
if (!(ipvs->sync_state & IP_VS_STATE_MASTER)) {
spin_unlock(&ipvs->sync_buff_lock);
return;
}
id = select_master_thread_id(ipvs, cp);
ms = &ipvs->ms[id];
#ifdef CONFIG_IP_VS_IPV6
if (cp->af == AF_INET6)
@ -559,27 +667,32 @@ sloop:
/* check if there is a space for this one */
pad = 0;
if (ipvs->sync_buff) {
pad = (4 - (size_t)ipvs->sync_buff->head) & 3;
if (ipvs->sync_buff->head + len + pad > ipvs->sync_buff->end) {
sb_queue_tail(ipvs);
ipvs->sync_buff = NULL;
buff = ms->sync_buff;
if (buff) {
m = buff->mesg;
pad = (4 - (size_t) buff->head) & 3;
/* Send buffer if it is for v0 */
if (buff->head + len + pad > buff->end || m->reserved) {
sb_queue_tail(ipvs, ms);
ms->sync_buff = NULL;
buff = NULL;
pad = 0;
}
}
if (!ipvs->sync_buff) {
ipvs->sync_buff = ip_vs_sync_buff_create(ipvs);
if (!ipvs->sync_buff) {
if (!buff) {
buff = ip_vs_sync_buff_create(ipvs);
if (!buff) {
spin_unlock(&ipvs->sync_buff_lock);
pr_err("ip_vs_sync_buff_create failed.\n");
return;
}
ms->sync_buff = buff;
m = buff->mesg;
}
m = ipvs->sync_buff->mesg;
p = ipvs->sync_buff->head;
ipvs->sync_buff->head += pad + len;
p = buff->head;
buff->head += pad + len;
m->size += pad + len;
/* Add ev. padding from prev. sync_conn */
while (pad--)
@ -644,16 +757,10 @@ control:
cp = cp->control;
if (!cp)
return;
/*
* Reduce sync rate for templates
* i.e only increment in_pkts for Templates.
*/
if (cp->flags & IP_VS_CONN_F_TEMPLATE) {
int pkts = atomic_add_return(1, &cp->in_pkts);
if (pkts % sysctl_sync_period(ipvs) != 1)
return;
}
if (cp->flags & IP_VS_CONN_F_TEMPLATE)
pkts = atomic_add_return(1, &cp->in_pkts);
else
pkts = sysctl_sync_threshold(ipvs);
goto sloop;
}
@ -731,9 +838,32 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
else
cp = ip_vs_ct_in_get(param);
if (cp && param->pe_data) /* Free pe_data */
if (cp) {
/* Free pe_data */
kfree(param->pe_data);
if (!cp) {
dest = cp->dest;
spin_lock(&cp->lock);
if ((cp->flags ^ flags) & IP_VS_CONN_F_INACTIVE &&
!(flags & IP_VS_CONN_F_TEMPLATE) && dest) {
if (flags & IP_VS_CONN_F_INACTIVE) {
atomic_dec(&dest->activeconns);
atomic_inc(&dest->inactconns);
} else {
atomic_inc(&dest->activeconns);
atomic_dec(&dest->inactconns);
}
}
flags &= IP_VS_CONN_F_BACKUP_UPD_MASK;
flags |= cp->flags & ~IP_VS_CONN_F_BACKUP_UPD_MASK;
cp->flags = flags;
spin_unlock(&cp->lock);
if (!dest) {
dest = ip_vs_try_bind_dest(cp);
if (dest)
atomic_dec(&dest->refcnt);
}
} else {
/*
* Find the appropriate destination for the connection.
* If it is not found the connection will remain unbound
@ -742,18 +872,6 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
dest = ip_vs_find_dest(net, type, daddr, dport, param->vaddr,
param->vport, protocol, fwmark, flags);
/* Set the approprite ativity flag */
if (protocol == IPPROTO_TCP) {
if (state != IP_VS_TCP_S_ESTABLISHED)
flags |= IP_VS_CONN_F_INACTIVE;
else
flags &= ~IP_VS_CONN_F_INACTIVE;
} else if (protocol == IPPROTO_SCTP) {
if (state != IP_VS_SCTP_S_ESTABLISHED)
flags |= IP_VS_CONN_F_INACTIVE;
else
flags &= ~IP_VS_CONN_F_INACTIVE;
}
cp = ip_vs_conn_new(param, daddr, dport, flags, dest, fwmark);
if (dest)
atomic_dec(&dest->refcnt);
@ -763,34 +881,6 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
IP_VS_DBG(2, "BACKUP, add new conn. failed\n");
return;
}
} else if (!cp->dest) {
dest = ip_vs_try_bind_dest(cp);
if (dest)
atomic_dec(&dest->refcnt);
} else if ((cp->dest) && (cp->protocol == IPPROTO_TCP) &&
(cp->state != state)) {
/* update active/inactive flag for the connection */
dest = cp->dest;
if (!(cp->flags & IP_VS_CONN_F_INACTIVE) &&
(state != IP_VS_TCP_S_ESTABLISHED)) {
atomic_dec(&dest->activeconns);
atomic_inc(&dest->inactconns);
cp->flags |= IP_VS_CONN_F_INACTIVE;
} else if ((cp->flags & IP_VS_CONN_F_INACTIVE) &&
(state == IP_VS_TCP_S_ESTABLISHED)) {
atomic_inc(&dest->activeconns);
atomic_dec(&dest->inactconns);
cp->flags &= ~IP_VS_CONN_F_INACTIVE;
}
} else if ((cp->dest) && (cp->protocol == IPPROTO_SCTP) &&
(cp->state != state)) {
dest = cp->dest;
if (!(cp->flags & IP_VS_CONN_F_INACTIVE) &&
(state != IP_VS_SCTP_S_ESTABLISHED)) {
atomic_dec(&dest->activeconns);
atomic_inc(&dest->inactconns);
cp->flags &= ~IP_VS_CONN_F_INACTIVE;
}
}
if (opt)
@ -1148,6 +1238,28 @@ static void ip_vs_process_message(struct net *net, __u8 *buffer,
}
/*
* Setup sndbuf (mode=1) or rcvbuf (mode=0)
*/
static void set_sock_size(struct sock *sk, int mode, int val)
{
/* setsockopt(sock, SOL_SOCKET, SO_SNDBUF, &val, sizeof(val)); */
/* setsockopt(sock, SOL_SOCKET, SO_RCVBUF, &val, sizeof(val)); */
lock_sock(sk);
if (mode) {
val = clamp_t(int, val, (SOCK_MIN_SNDBUF + 1) / 2,
sysctl_wmem_max);
sk->sk_sndbuf = val * 2;
sk->sk_userlocks |= SOCK_SNDBUF_LOCK;
} else {
val = clamp_t(int, val, (SOCK_MIN_RCVBUF + 1) / 2,
sysctl_rmem_max);
sk->sk_rcvbuf = val * 2;
sk->sk_userlocks |= SOCK_RCVBUF_LOCK;
}
release_sock(sk);
}
/*
* Setup loopback of outgoing multicasts on a sending socket
*/
@ -1298,9 +1410,15 @@ static int bind_mcastif_addr(struct socket *sock, char *ifname)
/*
* Set up sending multicast socket over UDP
*/
static struct socket *make_send_sock(struct net *net)
static struct socket *make_send_sock(struct net *net, int id)
{
struct netns_ipvs *ipvs = net_ipvs(net);
/* multicast addr */
struct sockaddr_in mcast_addr = {
.sin_family = AF_INET,
.sin_port = cpu_to_be16(IP_VS_SYNC_PORT + id),
.sin_addr.s_addr = cpu_to_be32(IP_VS_SYNC_GROUP),
};
struct socket *sock;
int result;
@ -1324,6 +1442,9 @@ static struct socket *make_send_sock(struct net *net)
set_mcast_loop(sock->sk, 0);
set_mcast_ttl(sock->sk, 1);
result = sysctl_sync_sock_size(ipvs);
if (result > 0)
set_sock_size(sock->sk, 1, result);
result = bind_mcastif_addr(sock, ipvs->master_mcast_ifn);
if (result < 0) {
@ -1349,9 +1470,15 @@ error:
/*
* Set up receiving multicast socket over UDP
*/
static struct socket *make_receive_sock(struct net *net)
static struct socket *make_receive_sock(struct net *net, int id)
{
struct netns_ipvs *ipvs = net_ipvs(net);
/* multicast addr */
struct sockaddr_in mcast_addr = {
.sin_family = AF_INET,
.sin_port = cpu_to_be16(IP_VS_SYNC_PORT + id),
.sin_addr.s_addr = cpu_to_be32(IP_VS_SYNC_GROUP),
};
struct socket *sock;
int result;
@ -1369,6 +1496,9 @@ static struct socket *make_receive_sock(struct net *net)
sk_change_net(sock->sk, net);
/* it is equivalent to the REUSEADDR option in user-space */
sock->sk->sk_reuse = SK_CAN_REUSE;
result = sysctl_sync_sock_size(ipvs);
if (result > 0)
set_sock_size(sock->sk, 0, result);
result = sock->ops->bind(sock, (struct sockaddr *) &mcast_addr,
sizeof(struct sockaddr));
@ -1411,18 +1541,22 @@ ip_vs_send_async(struct socket *sock, const char *buffer, const size_t length)
return len;
}
static void
static int
ip_vs_send_sync_msg(struct socket *sock, struct ip_vs_sync_mesg *msg)
{
int msize;
int ret;
msize = msg->size;
/* Put size in network byte order */
msg->size = htons(msg->size);
if (ip_vs_send_async(sock, (char *)msg, msize) != msize)
pr_err("ip_vs_send_async error\n");
ret = ip_vs_send_async(sock, (char *)msg, msize);
if (ret >= 0 || ret == -EAGAIN)
return ret;
pr_err("ip_vs_send_async error %d\n", ret);
return 0;
}
static int
@ -1438,48 +1572,90 @@ ip_vs_receive(struct socket *sock, char *buffer, const size_t buflen)
iov.iov_base = buffer;
iov.iov_len = (size_t)buflen;
len = kernel_recvmsg(sock, &msg, &iov, 1, buflen, 0);
len = kernel_recvmsg(sock, &msg, &iov, 1, buflen, MSG_DONTWAIT);
if (len < 0)
return -1;
return len;
LeaveFunction(7);
return len;
}
/* Wakeup the master thread for sending */
static void master_wakeup_work_handler(struct work_struct *work)
{
struct ipvs_master_sync_state *ms =
container_of(work, struct ipvs_master_sync_state,
master_wakeup_work.work);
struct netns_ipvs *ipvs = ms->ipvs;
spin_lock_bh(&ipvs->sync_lock);
if (ms->sync_queue_len &&
ms->sync_queue_delay < IPVS_SYNC_WAKEUP_RATE) {
ms->sync_queue_delay = IPVS_SYNC_WAKEUP_RATE;
wake_up_process(ms->master_thread);
}
spin_unlock_bh(&ipvs->sync_lock);
}
/* Get next buffer to send */
static inline struct ip_vs_sync_buff *
next_sync_buff(struct netns_ipvs *ipvs, struct ipvs_master_sync_state *ms)
{
struct ip_vs_sync_buff *sb;
sb = sb_dequeue(ipvs, ms);
if (sb)
return sb;
/* Do not delay entries in buffer for more than 2 seconds */
return get_curr_sync_buff(ipvs, ms, IPVS_SYNC_FLUSH_TIME);
}
static int sync_thread_master(void *data)
{
struct ip_vs_sync_thread_data *tinfo = data;
struct netns_ipvs *ipvs = net_ipvs(tinfo->net);
struct ipvs_master_sync_state *ms = &ipvs->ms[tinfo->id];
struct sock *sk = tinfo->sock->sk;
struct ip_vs_sync_buff *sb;
pr_info("sync thread started: state = MASTER, mcast_ifn = %s, "
"syncid = %d\n",
ipvs->master_mcast_ifn, ipvs->master_syncid);
"syncid = %d, id = %d\n",
ipvs->master_mcast_ifn, ipvs->master_syncid, tinfo->id);
while (!kthread_should_stop()) {
while ((sb = sb_dequeue(ipvs))) {
ip_vs_send_sync_msg(tinfo->sock, sb->mesg);
for (;;) {
sb = next_sync_buff(ipvs, ms);
if (unlikely(kthread_should_stop()))
break;
if (!sb) {
schedule_timeout(IPVS_SYNC_CHECK_PERIOD);
continue;
}
while (ip_vs_send_sync_msg(tinfo->sock, sb->mesg) < 0) {
int ret = 0;
__wait_event_interruptible(*sk_sleep(sk),
sock_writeable(sk) ||
kthread_should_stop(),
ret);
if (unlikely(kthread_should_stop()))
goto done;
}
ip_vs_sync_buff_release(sb);
}
/* check if entries stay in ipvs->sync_buff for 2 seconds */
sb = get_curr_sync_buff(ipvs, 2 * HZ);
if (sb) {
ip_vs_send_sync_msg(tinfo->sock, sb->mesg);
done:
__set_current_state(TASK_RUNNING);
if (sb)
ip_vs_sync_buff_release(sb);
}
schedule_timeout_interruptible(HZ);
}
/* clean up the sync_buff queue */
while ((sb = sb_dequeue(ipvs)))
while ((sb = sb_dequeue(ipvs, ms)))
ip_vs_sync_buff_release(sb);
__set_current_state(TASK_RUNNING);
/* clean up the current sync_buff */
sb = get_curr_sync_buff(ipvs, 0);
sb = get_curr_sync_buff(ipvs, ms, 0);
if (sb)
ip_vs_sync_buff_release(sb);
@ -1498,8 +1674,8 @@ static int sync_thread_backup(void *data)
int len;
pr_info("sync thread started: state = BACKUP, mcast_ifn = %s, "
"syncid = %d\n",
ipvs->backup_mcast_ifn, ipvs->backup_syncid);
"syncid = %d, id = %d\n",
ipvs->backup_mcast_ifn, ipvs->backup_syncid, tinfo->id);
while (!kthread_should_stop()) {
wait_event_interruptible(*sk_sleep(tinfo->sock->sk),
@ -1511,6 +1687,7 @@ static int sync_thread_backup(void *data)
len = ip_vs_receive(tinfo->sock, tinfo->buf,
ipvs->recv_mesg_maxlen);
if (len <= 0) {
if (len != -EAGAIN)
pr_err("receiving message error\n");
break;
}
@ -1535,86 +1712,140 @@ static int sync_thread_backup(void *data)
int start_sync_thread(struct net *net, int state, char *mcast_ifn, __u8 syncid)
{
struct ip_vs_sync_thread_data *tinfo;
struct task_struct **realtask, *task;
struct task_struct **array = NULL, *task;
struct socket *sock;
struct netns_ipvs *ipvs = net_ipvs(net);
char *name, *buf = NULL;
char *name;
int (*threadfn)(void *data);
int id, count;
int result = -ENOMEM;
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_v0));
if (!ipvs->sync_state) {
count = clamp(sysctl_sync_ports(ipvs), 1, IPVS_SYNC_PORTS_MAX);
ipvs->threads_mask = count - 1;
} else
count = ipvs->threads_mask + 1;
if (state == IP_VS_STATE_MASTER) {
if (ipvs->master_thread)
if (ipvs->ms)
return -EEXIST;
strlcpy(ipvs->master_mcast_ifn, mcast_ifn,
sizeof(ipvs->master_mcast_ifn));
ipvs->master_syncid = syncid;
realtask = &ipvs->master_thread;
name = "ipvs_master:%d";
name = "ipvs-m:%d:%d";
threadfn = sync_thread_master;
sock = make_send_sock(net);
} else if (state == IP_VS_STATE_BACKUP) {
if (ipvs->backup_thread)
if (ipvs->backup_threads)
return -EEXIST;
strlcpy(ipvs->backup_mcast_ifn, mcast_ifn,
sizeof(ipvs->backup_mcast_ifn));
ipvs->backup_syncid = syncid;
realtask = &ipvs->backup_thread;
name = "ipvs_backup:%d";
name = "ipvs-b:%d:%d";
threadfn = sync_thread_backup;
sock = make_receive_sock(net);
} else {
return -EINVAL;
}
if (IS_ERR(sock)) {
result = PTR_ERR(sock);
if (state == IP_VS_STATE_MASTER) {
struct ipvs_master_sync_state *ms;
ipvs->ms = kzalloc(count * sizeof(ipvs->ms[0]), GFP_KERNEL);
if (!ipvs->ms)
goto out;
ms = ipvs->ms;
for (id = 0; id < count; id++, ms++) {
INIT_LIST_HEAD(&ms->sync_queue);
ms->sync_queue_len = 0;
ms->sync_queue_delay = 0;
INIT_DELAYED_WORK(&ms->master_wakeup_work,
master_wakeup_work_handler);
ms->ipvs = ipvs;
}
} else {
array = kzalloc(count * sizeof(struct task_struct *),
GFP_KERNEL);
if (!array)
goto out;
}
set_sync_mesg_maxlen(net, state);
if (state == IP_VS_STATE_BACKUP) {
buf = kmalloc(ipvs->recv_mesg_maxlen, GFP_KERNEL);
if (!buf)
goto outsocket;
}
tinfo = NULL;
for (id = 0; id < count; id++) {
if (state == IP_VS_STATE_MASTER)
sock = make_send_sock(net, id);
else
sock = make_receive_sock(net, id);
if (IS_ERR(sock)) {
result = PTR_ERR(sock);
goto outtinfo;
}
tinfo = kmalloc(sizeof(*tinfo), GFP_KERNEL);
if (!tinfo)
goto outbuf;
goto outsocket;
tinfo->net = net;
tinfo->sock = sock;
tinfo->buf = buf;
if (state == IP_VS_STATE_BACKUP) {
tinfo->buf = kmalloc(ipvs->recv_mesg_maxlen,
GFP_KERNEL);
if (!tinfo->buf)
goto outtinfo;
}
tinfo->id = id;
task = kthread_run(threadfn, tinfo, name, ipvs->gen);
task = kthread_run(threadfn, tinfo, name, ipvs->gen, id);
if (IS_ERR(task)) {
result = PTR_ERR(task);
goto outtinfo;
}
tinfo = NULL;
if (state == IP_VS_STATE_MASTER)
ipvs->ms[id].master_thread = task;
else
array[id] = task;
}
/* mark as active */
*realtask = task;
if (state == IP_VS_STATE_BACKUP)
ipvs->backup_threads = array;
spin_lock_bh(&ipvs->sync_buff_lock);
ipvs->sync_state |= state;
spin_unlock_bh(&ipvs->sync_buff_lock);
/* increase the module use count */
ip_vs_use_count_inc();
return 0;
outtinfo:
kfree(tinfo);
outbuf:
kfree(buf);
outsocket:
sk_release_kernel(sock->sk);
outtinfo:
if (tinfo) {
sk_release_kernel(tinfo->sock->sk);
kfree(tinfo->buf);
kfree(tinfo);
}
count = id;
while (count-- > 0) {
if (state == IP_VS_STATE_MASTER)
kthread_stop(ipvs->ms[count].master_thread);
else
kthread_stop(array[count]);
}
kfree(array);
out:
if (!(ipvs->sync_state & IP_VS_STATE_MASTER)) {
kfree(ipvs->ms);
ipvs->ms = NULL;
}
return result;
}
@ -1622,38 +1853,60 @@ out:
int stop_sync_thread(struct net *net, int state)
{
struct netns_ipvs *ipvs = net_ipvs(net);
struct task_struct **array;
int id;
int retc = -EINVAL;
IP_VS_DBG(7, "%s(): pid %d\n", __func__, task_pid_nr(current));
if (state == IP_VS_STATE_MASTER) {
if (!ipvs->master_thread)
if (!ipvs->ms)
return -ESRCH;
pr_info("stopping master sync thread %d ...\n",
task_pid_nr(ipvs->master_thread));
/*
* 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.
*/
spin_lock_bh(&ipvs->sync_lock);
spin_lock_bh(&ipvs->sync_buff_lock);
spin_lock(&ipvs->sync_lock);
ipvs->sync_state &= ~IP_VS_STATE_MASTER;
spin_unlock_bh(&ipvs->sync_lock);
retc = kthread_stop(ipvs->master_thread);
ipvs->master_thread = NULL;
spin_unlock(&ipvs->sync_lock);
spin_unlock_bh(&ipvs->sync_buff_lock);
retc = 0;
for (id = ipvs->threads_mask; id >= 0; id--) {
struct ipvs_master_sync_state *ms = &ipvs->ms[id];
int ret;
pr_info("stopping master sync thread %d ...\n",
task_pid_nr(ms->master_thread));
cancel_delayed_work_sync(&ms->master_wakeup_work);
ret = kthread_stop(ms->master_thread);
if (retc >= 0)
retc = ret;
}
kfree(ipvs->ms);
ipvs->ms = NULL;
} else if (state == IP_VS_STATE_BACKUP) {
if (!ipvs->backup_thread)
if (!ipvs->backup_threads)
return -ESRCH;
pr_info("stopping backup sync thread %d ...\n",
task_pid_nr(ipvs->backup_thread));
ipvs->sync_state &= ~IP_VS_STATE_BACKUP;
retc = kthread_stop(ipvs->backup_thread);
ipvs->backup_thread = NULL;
array = ipvs->backup_threads;
retc = 0;
for (id = ipvs->threads_mask; id >= 0; id--) {
int ret;
pr_info("stopping backup sync thread %d ...\n",
task_pid_nr(array[id]));
ret = kthread_stop(array[id]);
if (retc >= 0)
retc = ret;
}
kfree(array);
ipvs->backup_threads = NULL;
}
/* decrease the module use count */
@ -1670,13 +1923,8 @@ int __net_init ip_vs_sync_net_init(struct net *net)
struct netns_ipvs *ipvs = net_ipvs(net);
__mutex_init(&ipvs->sync_mutex, "ipvs->sync_mutex", &__ipvs_sync_key);
INIT_LIST_HEAD(&ipvs->sync_queue);
spin_lock_init(&ipvs->sync_lock);
spin_lock_init(&ipvs->sync_buff_lock);
ipvs->sync_mcast_addr.sin_family = AF_INET;
ipvs->sync_mcast_addr.sin_port = cpu_to_be16(IP_VS_SYNC_PORT);
ipvs->sync_mcast_addr.sin_addr.s_addr = cpu_to_be32(IP_VS_SYNC_GROUP);
return 0;
}

2
net/netfilter/ipvs/ip_vs_wrr.c
Просмотреть файл

@ -84,7 +84,7 @@ static int ip_vs_wrr_init_svc(struct ip_vs_service *svc)
/*
* Allocate the mark variable for WRR scheduling
*/
mark = kmalloc(sizeof(struct ip_vs_wrr_mark), GFP_ATOMIC);
mark = kmalloc(sizeof(struct ip_vs_wrr_mark), GFP_KERNEL);
if (mark == NULL)
return -ENOMEM;

15
net/netfilter/nf_conntrack_core.c
Просмотреть файл

@ -1336,7 +1336,6 @@ static void nf_conntrack_cleanup_init_net(void)
while (untrack_refs() > 0)
schedule();
nf_conntrack_helper_fini();
nf_conntrack_proto_fini();
#ifdef CONFIG_NF_CONNTRACK_ZONES
nf_ct_extend_unregister(&nf_ct_zone_extend);
@ -1354,6 +1353,7 @@ static void nf_conntrack_cleanup_net(struct net *net)
}
nf_ct_free_hashtable(net->ct.hash, net->ct.htable_size);
nf_conntrack_helper_fini(net);
nf_conntrack_timeout_fini(net);
nf_conntrack_ecache_fini(net);
nf_conntrack_tstamp_fini(net);
@ -1504,10 +1504,6 @@ static int nf_conntrack_init_init_net(void)
if (ret < 0)
goto err_proto;
ret = nf_conntrack_helper_init();
if (ret < 0)
goto err_helper;
#ifdef CONFIG_NF_CONNTRACK_ZONES
ret = nf_ct_extend_register(&nf_ct_zone_extend);
if (ret < 0)
@ -1525,10 +1521,8 @@ static int nf_conntrack_init_init_net(void)
#ifdef CONFIG_NF_CONNTRACK_ZONES
err_extend:
nf_conntrack_helper_fini();
#endif
err_helper:
nf_conntrack_proto_fini();
#endif
err_proto:
return ret;
}
@ -1589,9 +1583,14 @@ static int nf_conntrack_init_net(struct net *net)
ret = nf_conntrack_timeout_init(net);
if (ret < 0)
goto err_timeout;
ret = nf_conntrack_helper_init(net);
if (ret < 0)
goto err_helper;
return 0;
err_helper:
nf_conntrack_timeout_fini(net);
err_timeout:
nf_conntrack_ecache_fini(net);
err_ecache:

10
net/netfilter/nf_conntrack_ecache.c
Просмотреть файл

@ -84,7 +84,7 @@ EXPORT_SYMBOL_GPL(nf_ct_deliver_cached_events);
int nf_conntrack_register_notifier(struct net *net,
struct nf_ct_event_notifier *new)
{
int ret = 0;
int ret;
struct nf_ct_event_notifier *notify;
mutex_lock(&nf_ct_ecache_mutex);
@ -95,8 +95,7 @@ int nf_conntrack_register_notifier(struct net *net,
goto out_unlock;
}
rcu_assign_pointer(net->ct.nf_conntrack_event_cb, new);
mutex_unlock(&nf_ct_ecache_mutex);
return ret;
ret = 0;
out_unlock:
mutex_unlock(&nf_ct_ecache_mutex);
@ -121,7 +120,7 @@ EXPORT_SYMBOL_GPL(nf_conntrack_unregister_notifier);
int nf_ct_expect_register_notifier(struct net *net,
struct nf_exp_event_notifier *new)
{
int ret = 0;
int ret;
struct nf_exp_event_notifier *notify;
mutex_lock(&nf_ct_ecache_mutex);
@ -132,8 +131,7 @@ int nf_ct_expect_register_notifier(struct net *net,
goto out_unlock;
}
rcu_assign_pointer(net->ct.nf_expect_event_cb, new);
mutex_unlock(&nf_ct_ecache_mutex);
return ret;
ret = 0;
out_unlock:
mutex_unlock(&nf_ct_ecache_mutex);

108
net/netfilter/nf_conntrack_helper.c
Просмотреть файл

@ -34,6 +34,67 @@ static struct hlist_head *nf_ct_helper_hash __read_mostly;
static unsigned int nf_ct_helper_hsize __read_mostly;
static unsigned int nf_ct_helper_count __read_mostly;
static bool nf_ct_auto_assign_helper __read_mostly = true;
module_param_named(nf_conntrack_helper, nf_ct_auto_assign_helper, bool, 0644);
MODULE_PARM_DESC(nf_conntrack_helper,
"Enable automatic conntrack helper assignment (default 1)");
#ifdef CONFIG_SYSCTL
static struct ctl_table helper_sysctl_table[] = {
{
.procname = "nf_conntrack_helper",
.data = &init_net.ct.sysctl_auto_assign_helper,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{}
};
static int nf_conntrack_helper_init_sysctl(struct net *net)
{
struct ctl_table *table;
table = kmemdup(helper_sysctl_table, sizeof(helper_sysctl_table),
GFP_KERNEL);
if (!table)
goto out;
table[0].data = &net->ct.sysctl_auto_assign_helper;
net->ct.helper_sysctl_header =
register_net_sysctl(net, "net/netfilter", table);
if (!net->ct.helper_sysctl_header) {
pr_err("nf_conntrack_helper: can't register to sysctl.\n");
goto out_register;
}
return 0;
out_register:
kfree(table);
out:
return -ENOMEM;
}
static void nf_conntrack_helper_fini_sysctl(struct net *net)
{
struct ctl_table *table;
table = net->ct.helper_sysctl_header->ctl_table_arg;
unregister_net_sysctl_table(net->ct.helper_sysctl_header);
kfree(table);
}
#else
static int nf_conntrack_helper_init_sysctl(struct net *net)
{
return 0;
}
static void nf_conntrack_helper_fini_sysctl(struct net *net)
{
}
#endif /* CONFIG_SYSCTL */
/* Stupid hash, but collision free for the default registrations of the
* helpers currently in the kernel. */
@ -118,17 +179,38 @@ int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
{
struct nf_conntrack_helper *helper = NULL;
struct nf_conn_help *help;
struct net *net = nf_ct_net(ct);
int ret = 0;
/* We already got a helper explicitly attached. The function
* nf_conntrack_alter_reply - in case NAT is in use - asks for looking
* the helper up again. Since now the user is in full control of
* making consistent helper configurations, skip this automatic
* re-lookup, otherwise we'll lose the helper.
*/
if (test_bit(IPS_HELPER_BIT, &ct->status))
return 0;
if (tmpl != NULL) {
help = nfct_help(tmpl);
if (help != NULL)
if (help != NULL) {
helper = help->helper;
set_bit(IPS_HELPER_BIT, &ct->status);
}
}
help = nfct_help(ct);
if (helper == NULL)
if (net->ct.sysctl_auto_assign_helper && helper == NULL) {
helper = __nf_ct_helper_find(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
if (unlikely(!net->ct.auto_assign_helper_warned && helper)) {
pr_info("nf_conntrack: automatic helper "
"assignment is deprecated and it will "
"be removed soon. Use the iptables CT target "
"to attach helpers instead.\n");
net->ct.auto_assign_helper_warned = true;
}
}
if (helper == NULL) {
if (help)
RCU_INIT_POINTER(help->helper, NULL);
@ -315,28 +397,44 @@ static struct nf_ct_ext_type helper_extend __read_mostly = {
.id = NF_CT_EXT_HELPER,
};
int nf_conntrack_helper_init(void)
int nf_conntrack_helper_init(struct net *net)
{
int err;
net->ct.auto_assign_helper_warned = false;
net->ct.sysctl_auto_assign_helper = nf_ct_auto_assign_helper;
if (net_eq(net, &init_net)) {
nf_ct_helper_hsize = 1; /* gets rounded up to use one page */
nf_ct_helper_hash = nf_ct_alloc_hashtable(&nf_ct_helper_hsize, 0);
nf_ct_helper_hash =
nf_ct_alloc_hashtable(&nf_ct_helper_hsize, 0);
if (!nf_ct_helper_hash)
return -ENOMEM;
err = nf_ct_extend_register(&helper_extend);
if (err < 0)
goto err1;
}
err = nf_conntrack_helper_init_sysctl(net);
if (err < 0)
goto out_sysctl;
return 0;
out_sysctl:
if (net_eq(net, &init_net))
nf_ct_extend_unregister(&helper_extend);
err1:
nf_ct_free_hashtable(nf_ct_helper_hash, nf_ct_helper_hsize);
return err;
}
void nf_conntrack_helper_fini(void)
void nf_conntrack_helper_fini(struct net *net)
{
nf_conntrack_helper_fini_sysctl(net);
if (net_eq(net, &init_net)) {
nf_ct_extend_unregister(&helper_extend);
nf_ct_free_hashtable(nf_ct_helper_hash, nf_ct_helper_hsize);
}
}

10
net/netfilter/nf_conntrack_netlink.c
Просмотреть файл

@ -2080,7 +2080,15 @@ static int
ctnetlink_change_expect(struct nf_conntrack_expect *x,
const struct nlattr * const cda[])
{
return -EOPNOTSUPP;
if (cda[CTA_EXPECT_TIMEOUT]) {
if (!del_timer(&x->timeout))
return -ETIME;
x->timeout.expires = jiffies +
ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ;
add_timer(&x->timeout);
}
return 0;
}
static const struct nla_policy exp_nat_nla_policy[CTA_EXPECT_NAT_MAX+1] = {

13
security/selinux/nlmsgtab.c
Просмотреть файл

@ -14,7 +14,6 @@
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/if.h>
#include <linux/netfilter_ipv4/ip_queue.h>
#include <linux/inet_diag.h>
#include <linux/xfrm.h>
#include <linux/audit.h>
@ -70,12 +69,6 @@ static struct nlmsg_perm nlmsg_route_perms[] =
{ RTM_SETDCB, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
};
static struct nlmsg_perm nlmsg_firewall_perms[] =
{
{ IPQM_MODE, NETLINK_FIREWALL_SOCKET__NLMSG_WRITE },
{ IPQM_VERDICT, NETLINK_FIREWALL_SOCKET__NLMSG_WRITE },
};
static struct nlmsg_perm nlmsg_tcpdiag_perms[] =
{
{ TCPDIAG_GETSOCK, NETLINK_TCPDIAG_SOCKET__NLMSG_READ },
@ -145,12 +138,6 @@ int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
sizeof(nlmsg_route_perms));
break;
case SECCLASS_NETLINK_FIREWALL_SOCKET:
case SECCLASS_NETLINK_IP6FW_SOCKET:
err = nlmsg_perm(nlmsg_type, perm, nlmsg_firewall_perms,
sizeof(nlmsg_firewall_perms));
break;
case SECCLASS_NETLINK_TCPDIAG_SOCKET:
err = nlmsg_perm(nlmsg_type, perm, nlmsg_tcpdiag_perms,
sizeof(nlmsg_tcpdiag_perms));