Release 4.7 include/net/net_namespace.h
/*
* Operations on the network namespace
*/
#ifndef __NET_NET_NAMESPACE_H
#define __NET_NET_NAMESPACE_H
#include <linux/atomic.h>
#include <linux/workqueue.h>
#include <linux/list.h>
#include <linux/sysctl.h>
#include <net/flow.h>
#include <net/netns/core.h>
#include <net/netns/mib.h>
#include <net/netns/unix.h>
#include <net/netns/packet.h>
#include <net/netns/ipv4.h>
#include <net/netns/ipv6.h>
#include <net/netns/ieee802154_6lowpan.h>
#include <net/netns/sctp.h>
#include <net/netns/dccp.h>
#include <net/netns/netfilter.h>
#include <net/netns/x_tables.h>
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
#include <net/netns/conntrack.h>
#endif
#include <net/netns/nftables.h>
#include <net/netns/xfrm.h>
#include <net/netns/mpls.h>
#include <linux/ns_common.h>
#include <linux/idr.h>
#include <linux/skbuff.h>
struct user_namespace;
struct proc_dir_entry;
struct net_device;
struct sock;
struct ctl_table_header;
struct net_generic;
struct sock;
struct netns_ipvs;
#define NETDEV_HASHBITS 8
#define NETDEV_HASHENTRIES (1 << NETDEV_HASHBITS)
struct net {
atomic_t passive; /* To decided when the network
* namespace should be freed.
*/
atomic_t count; /* To decided when the network
* namespace should be shut down.
*/
spinlock_t rules_mod_lock;
atomic64_t cookie_gen;
struct list_head list; /* list of network namespaces */
struct list_head cleanup_list; /* namespaces on death row */
struct list_head exit_list; /* Use only net_mutex */
struct user_namespace *user_ns; /* Owning user namespace */
spinlock_t nsid_lock;
struct idr netns_ids;
struct ns_common ns;
struct proc_dir_entry *proc_net;
struct proc_dir_entry *proc_net_stat;
#ifdef CONFIG_SYSCTL
struct ctl_table_set sysctls;
#endif
struct sock *rtnl; /* rtnetlink socket */
struct sock *genl_sock;
struct list_head dev_base_head;
struct hlist_head *dev_name_head;
struct hlist_head *dev_index_head;
unsigned int dev_base_seq; /* protected by rtnl_mutex */
int ifindex;
unsigned int dev_unreg_count;
/* core fib_rules */
struct list_head rules_ops;
struct net_device *loopback_dev; /* The loopback */
struct netns_core core;
struct netns_mib mib;
struct netns_packet packet;
struct netns_unix unx;
struct netns_ipv4 ipv4;
#if IS_ENABLED(CONFIG_IPV6)
struct netns_ipv6 ipv6;
#endif
#if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN)
struct netns_ieee802154_lowpan ieee802154_lowpan;
#endif
#if defined(CONFIG_IP_SCTP) || defined(CONFIG_IP_SCTP_MODULE)
struct netns_sctp sctp;
#endif
#if defined(CONFIG_IP_DCCP) || defined(CONFIG_IP_DCCP_MODULE)
struct netns_dccp dccp;
#endif
#ifdef CONFIG_NETFILTER
struct netns_nf nf;
struct netns_xt xt;
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
struct netns_ct ct;
#endif
#if defined(CONFIG_NF_TABLES) || defined(CONFIG_NF_TABLES_MODULE)
struct netns_nftables nft;
#endif
#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
struct netns_nf_frag nf_frag;
#endif
struct sock *nfnl;
struct sock *nfnl_stash;
#if IS_ENABLED(CONFIG_NETFILTER_NETLINK_ACCT)
struct list_head nfnl_acct_list;
#endif
#if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT)
struct list_head nfct_timeout_list;
#endif
#endif
#ifdef CONFIG_WEXT_CORE
struct sk_buff_head wext_nlevents;
#endif
struct net_generic __rcu *gen;
/* Note : following structs are cache line aligned */
#ifdef CONFIG_XFRM
struct netns_xfrm xfrm;
#endif
#if IS_ENABLED(CONFIG_IP_VS)
struct netns_ipvs *ipvs;
#endif
#if IS_ENABLED(CONFIG_MPLS)
struct netns_mpls mpls;
#endif
struct sock *diag_nlsk;
atomic_t fnhe_genid;
};
#include <linux/seq_file_net.h>
/* Init's network namespace */
extern struct net init_net;
#ifdef CONFIG_NET_NS
struct net *copy_net_ns(unsigned long flags, struct user_namespace *user_ns,
struct net *old_net);
#else /* CONFIG_NET_NS */
#include <linux/sched.h>
#include <linux/nsproxy.h>
static inline struct net *copy_net_ns(unsigned long flags,
struct user_namespace *user_ns, struct net *old_net)
{
if (flags & CLONE_NEWNET)
return ERR_PTR(-EINVAL);
return old_net;
}
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| Total | 39 | 100.00% | 3 | 100.00% |
#endif /* CONFIG_NET_NS */
extern struct list_head net_namespace_list;
struct net *get_net_ns_by_pid(pid_t pid);
struct net *get_net_ns_by_fd(int pid);
#ifdef CONFIG_SYSCTL
void ipx_register_sysctl(void);
void ipx_unregister_sysctl(void);
#else
#define ipx_register_sysctl()
#define ipx_unregister_sysctl()
#endif
#ifdef CONFIG_NET_NS
void __put_net(struct net *net);
static inline struct net *get_net(struct net *net)
{
atomic_inc(&net->count);
return net;
}
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static inline struct net *maybe_get_net(struct net *net)
{
/* Used when we know struct net exists but we
* aren't guaranteed a previous reference count
* exists. If the reference count is zero this
* function fails and returns NULL.
*/
if (!atomic_inc_not_zero(&net->count))
net = NULL;
return net;
}
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static inline void put_net(struct net *net)
{
if (atomic_dec_and_test(&net->count))
__put_net(net);
}
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static inline
int net_eq(const struct net *net1, const struct net *net2)
{
return net1 == net2;
}
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void net_drop_ns(void *);
#else
static inline struct net *get_net(struct net *net)
{
return net;
}
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static inline void put_net(struct net *net)
{
}
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static inline struct net *maybe_get_net(struct net *net)
{
return net;
}
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| pavel emelianov | pavel emelianov | 16 | 94.12% | 1 | 50.00% |
| denis v. lunev | denis v. lunev | 1 | 5.88% | 1 | 50.00% |
| Total | 17 | 100.00% | 2 | 100.00% |
static inline
int net_eq(const struct net *net1, const struct net *net2)
{
return 1;
}
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| denis v. lunev | denis v. lunev | 14 | 63.64% | 1 | 50.00% |
| pavel emelianov | pavel emelianov | 8 | 36.36% | 1 | 50.00% |
| Total | 22 | 100.00% | 2 | 100.00% |
#define net_drop_ns NULL
#endif
typedef struct {
#ifdef CONFIG_NET_NS
struct net *net;
#endif
}
possible_net_t;
static inline void write_pnet(possible_net_t *pnet, struct net *net)
{
#ifdef CONFIG_NET_NS
pnet->net = net;
#endif
}
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| Total | 27 | 100.00% | 2 | 100.00% |
static inline struct net *read_pnet(const possible_net_t *pnet)
{
#ifdef CONFIG_NET_NS
return pnet->net;
#else
return &init_net;
#endif
}
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| eric w. biederman | eric w. biederman | 11 | 36.67% | 1 | 50.00% |
| Total | 30 | 100.00% | 2 | 100.00% |
#define for_each_net(VAR) \
list_for_each_entry(VAR, &net_namespace_list, list)
#define for_each_net_rcu(VAR) \
list_for_each_entry_rcu(VAR, &net_namespace_list, list)
#ifdef CONFIG_NET_NS
#define __net_init
#define __net_exit
#define __net_initdata
#define __net_initconst
#else
#define __net_init __init
#define __net_exit __exit_refok
#define __net_initdata __initdata
#define __net_initconst __initconst
#endif
int peernet2id_alloc(struct net *net, struct net *peer);
int peernet2id(struct net *net, struct net *peer);
bool peernet_has_id(struct net *net, struct net *peer);
struct net *get_net_ns_by_id(struct net *net, int id);
struct pernet_operations {
struct list_head list;
int (*init)(struct net *net);
void (*exit)(struct net *net);
void (*exit_batch)(struct list_head *net_exit_list);
int *id;
size_t size;
};
/*
* Use these carefully. If you implement a network device and it
* needs per network namespace operations use device pernet operations,
* otherwise use pernet subsys operations.
*
* Network interfaces need to be removed from a dying netns _before_
* subsys notifiers can be called, as most of the network code cleanup
* (which is done from subsys notifiers) runs with the assumption that
* dev_remove_pack has been called so no new packets will arrive during
* and after the cleanup functions have been called. dev_remove_pack
* is not per namespace so instead the guarantee of no more packets
* arriving in a network namespace is provided by ensuring that all
* network devices and all sockets have left the network namespace
* before the cleanup methods are called.
*
* For the longest time the ipv4 icmp code was registered as a pernet
* device which caused kernel oops, and panics during network
* namespace cleanup. So please don't get this wrong.
*/
int register_pernet_subsys(struct pernet_operations *);
void unregister_pernet_subsys(struct pernet_operations *);
int register_pernet_device(struct pernet_operations *);
void unregister_pernet_device(struct pernet_operations *);
struct ctl_table;
struct ctl_table_header;
#ifdef CONFIG_SYSCTL
int net_sysctl_init(void);
struct ctl_table_header *register_net_sysctl(struct net *net, const char *path,
struct ctl_table *table);
void unregister_net_sysctl_table(struct ctl_table_header *header);
#else
static inline int net_sysctl_init(void) { return 0; }
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static inline struct ctl_table_header *register_net_sysctl(struct net *net,
const char *path, struct ctl_table *table)
{
return NULL;
}
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static inline void unregister_net_sysctl_table(struct ctl_table_header *header)
{
}
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#endif
static inline int rt_genid_ipv4(struct net *net)
{
return atomic_read(&net->ipv4.rt_genid);
}
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| Total | 23 | 100.00% | 2 | 100.00% |
static inline void rt_genid_bump_ipv4(struct net *net)
{
atomic_inc(&net->ipv4.rt_genid);
}
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| Total | 22 | 100.00% | 2 | 100.00% |
extern void (*__fib6_flush_trees)(struct net *net);
static inline void rt_genid_bump_ipv6(struct net *net)
{
if (__fib6_flush_trees)
__fib6_flush_trees(net);
}
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| hannes frederic sowa | hannes frederic sowa | 5 | 23.81% | 1 | 33.33% |
| fan du | fan du | 1 | 4.76% | 1 | 33.33% |
| Total | 21 | 100.00% | 3 | 100.00% |
#if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN)
static inline struct netns_ieee802154_lowpan *
net_ieee802154_lowpan(struct net *net)
{
return &net->ieee802154_lowpan;
}
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| Total | 20 | 100.00% | 1 | 100.00% |
#endif
/* For callers who don't really care about whether it's IPv4 or IPv6 */
static inline void rt_genid_bump_all(struct net *net)
{
rt_genid_bump_ipv4(net);
rt_genid_bump_ipv6(net);
}
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static inline int fnhe_genid(struct net *net)
{
return atomic_read(&net->fnhe_genid);
}
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| Total | 21 | 100.00% | 1 | 100.00% |
static inline void fnhe_genid_bump(struct net *net)
{
atomic_inc(&net->fnhe_genid);
}
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| Total | 20 | 100.00% | 1 | 100.00% |
#endif /* __NET_NET_NAMESPACE_H */
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| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 515 | 38.38% | 21 | 23.08% |
| pavel emelianov | pavel emelianov | 135 | 10.06% | 11 | 12.09% |
| nicolas dichtel | nicolas dichtel | 85 | 6.33% | 4 | 4.40% |
| eric dumazet | eric dumazet | 76 | 5.66% | 6 | 6.59% |
| alexey dobriyan | alexey dobriyan | 73 | 5.44% | 5 | 5.49% |
| fan du | fan du | 65 | 4.84% | 1 | 1.10% |
| denis v. lunev | denis v. lunev | 56 | 4.17% | 10 | 10.99% |
| timo teras | timo teras | 44 | 3.28% | 1 | 1.10% |
| pablo neira ayuso | pablo neira ayuso | 38 | 2.83% | 3 | 3.30% |
| johannes berg | johannes berg | 31 | 2.31% | 6 | 6.59% |
| al viro | al viro | 29 | 2.16% | 3 | 3.30% |
| luis r. rodriguez | luis r. rodriguez | 28 | 2.09% | 1 | 1.10% |
| rashika kheria | rashika kheria | 27 | 2.01% | 1 | 1.10% |
| hideaki yoshifuji | hideaki yoshifuji | 24 | 1.79% | 1 | 1.10% |
| americo wang | americo wang | 15 | 1.12% | 2 | 2.20% |
| daniel lezcano | daniel lezcano | 15 | 1.12% | 2 | 2.20% |
| alexander aring | alexander aring | 15 | 1.12% | 1 | 1.10% |
| andreas schultz | andreas schultz | 12 | 0.89% | 1 | 1.10% |
| hannes frederic sowa | hannes frederic sowa | 12 | 0.89% | 1 | 1.10% |
| junwei zhang | junwei zhang | 8 | 0.60% | 1 | 1.10% |
| andi kleen | andi kleen | 7 | 0.52% | 1 | 1.10% |
| gao feng | gao feng | 7 | 0.52% | 1 | 1.10% |
| thomas graf | thomas graf | 5 | 0.37% | 1 | 1.10% |
| andrey vagin | andrey vagin | 5 | 0.37% | 1 | 1.10% |
| hans schillstrom | hans schillstrom | 5 | 0.37% | 1 | 1.10% |
| cong wang | cong wang | 3 | 0.22% | 1 | 1.10% |
| julian anastasov | julian anastasov | 3 | 0.22% | 1 | 1.10% |
| david s. miller | david s. miller | 3 | 0.22% | 1 | 1.10% |
| arun sharma | arun sharma | 1 | 0.07% | 1 | 1.10% |
| Total | 1342 | 100.00% | 91 | 100.00% |
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