arp_net_ops just addr/removes /proc entry.
devinet_ops allocates and frees duplicate of init_net tables
and (un)registers sysctl entries.
fib_net_ops allocates and frees pernet tables, creates/destroys
netlink socket and (un)initializes /proc entries. Foreign
pernet_operations do not touch them.
ip_rt_proc_ops only modifies pernet /proc entries.
xfrm_net_ops creates/destroys /proc entries, allocates/frees
pernet statistics, hashes and tables, and (un)initializes
sysctl files. These are not touched by foreigh pernet_operations
xfrm4_net_ops allocates/frees private pernet memory, and
configures sysctls.
sysctl_route_ops creates/destroys sysctls.
rt_genid_ops only initializes fields of just allocated net.
ipv4_inetpeer_ops allocated/frees net private memory.
igmp_net_ops just creates/destroys /proc files and socket,
noone else interested in.
tcp_sk_ops seems to be safe, because tcp_sk_init() does not
depend on any other pernet_operations modifications. Iteration
over hash table in inet_twsk_purge() is made under RCU lock,
and it's safe to iterate the table this way. Removing from
the table happen from inet_twsk_deschedule_put(), but this
function is safe without any extern locks, as it's synchronized
inside itself. There are many examples, it's used in different
context. So, it's safe to leave tcp_sk_exit_batch() unlocked.
tcp_net_metrics_ops is synchronized on tcp_metrics_lock and safe.
udplite4_net_ops only creates/destroys pernet /proc file.
icmp_sk_ops creates percpu sockets, not touched by foreign
pernet_operations.
ipmr_net_ops creates/destroys pernet fib tables, (un)registers
fib rules and /proc files. This seem to be safe to execute
in parallel with foreign pernet_operations.
af_inet_ops just sets up default parameters of newly created net.
ipv4_mib_ops creates and destroys pernet percpu statistics.
raw_net_ops, tcp4_net_ops, udp4_net_ops, ping_v4_net_ops
and ip_proc_ops only create/destroy pernet /proc files.
ip4_frags_ops creates and destroys sysctl file.
So, it's safe to make the pernet_operations async.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
static __net_initdata struct pernet_operations ipv4_mib_ops = {
.init = ipv4_mib_init_net,
.exit = ipv4_mib_exit_net,
+ .async = true,
};
static int __init init_ipv4_mibs(void)
static __net_initdata struct pernet_operations af_inet_ops = {
.init = inet_init_net,
.exit = inet_exit_net,
+ .async = true,
};
static int __init init_inet_pernet_ops(void)
static struct pernet_operations arp_net_ops = {
.init = arp_net_init,
.exit = arp_net_exit,
+ .async = true,
};
static int __init arp_proc_init(void)
static __net_initdata struct pernet_operations devinet_ops = {
.init = devinet_init_net,
.exit = devinet_exit_net,
+ .async = true,
};
static struct rtnl_af_ops inet_af_ops __read_mostly = {
static struct pernet_operations fib_net_ops = {
.init = fib_net_init,
.exit = fib_net_exit,
+ .async = true,
};
void __init ip_fib_init(void)
static struct pernet_operations __net_initdata icmp_sk_ops = {
.init = icmp_sk_init,
.exit = icmp_sk_exit,
+ .async = true,
};
int __init icmp_init(void)
static struct pernet_operations igmp_net_ops = {
.init = igmp_net_init,
.exit = igmp_net_exit,
+ .async = true,
};
#endif
static struct pernet_operations ip4_frags_ops = {
.init = ipv4_frags_init_net,
.exit = ipv4_frags_exit_net,
+ .async = true,
};
void __init ipfrag_init(void)
static struct pernet_operations ipmr_net_ops = {
.init = ipmr_net_init,
.exit = ipmr_net_exit,
+ .async = true,
};
int __init ip_mr_init(void)
static struct pernet_operations ping_v4_net_ops = {
.init = ping_v4_proc_init_net,
.exit = ping_v4_proc_exit_net,
+ .async = true,
};
int __init ping_proc_init(void)
static __net_initdata struct pernet_operations ip_proc_ops = {
.init = ip_proc_init_net,
.exit = ip_proc_exit_net,
+ .async = true,
};
int __init ip_misc_proc_init(void)
static __net_initdata struct pernet_operations raw_net_ops = {
.init = raw_init_net,
.exit = raw_exit_net,
+ .async = true,
};
int __init raw_proc_init(void)
static struct pernet_operations ip_rt_proc_ops __net_initdata = {
.init = ip_rt_do_proc_init,
.exit = ip_rt_do_proc_exit,
+ .async = true,
};
static int __init ip_rt_proc_init(void)
static __net_initdata struct pernet_operations sysctl_route_ops = {
.init = sysctl_route_net_init,
.exit = sysctl_route_net_exit,
+ .async = true,
};
#endif
static __net_initdata struct pernet_operations rt_genid_ops = {
.init = rt_genid_init,
+ .async = true,
};
static int __net_init ipv4_inetpeer_init(struct net *net)
static __net_initdata struct pernet_operations ipv4_inetpeer_ops = {
.init = ipv4_inetpeer_init,
.exit = ipv4_inetpeer_exit,
+ .async = true,
};
#ifdef CONFIG_IP_ROUTE_CLASSID
static struct pernet_operations tcp4_net_ops = {
.init = tcp4_proc_init_net,
.exit = tcp4_proc_exit_net,
+ .async = true,
};
int __init tcp4_proc_init(void)
.init = tcp_sk_init,
.exit = tcp_sk_exit,
.exit_batch = tcp_sk_exit_batch,
+ .async = true,
};
void __init tcp_v4_init(void)
static __net_initdata struct pernet_operations tcp_net_metrics_ops = {
.init = tcp_net_metrics_init,
.exit_batch = tcp_net_metrics_exit_batch,
+ .async = true,
};
void __init tcp_metrics_init(void)
static struct pernet_operations udp4_net_ops = {
.init = udp4_proc_init_net,
.exit = udp4_proc_exit_net,
+ .async = true,
};
int __init udp4_proc_init(void)
static struct pernet_operations udplite4_net_ops = {
.init = udplite4_proc_init_net,
.exit = udplite4_proc_exit_net,
+ .async = true,
};
static __init int udplite4_proc_init(void)
static struct pernet_operations __net_initdata xfrm4_net_ops = {
.init = xfrm4_net_init,
.exit = xfrm4_net_exit,
+ .async = true,
};
static void __init xfrm4_policy_init(void)
static struct pernet_operations __net_initdata xfrm_net_ops = {
.init = xfrm_net_init,
.exit = xfrm_net_exit,
+ .async = true,
};
void __init xfrm_init(void)
projects / linux.git / commitdiff