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Date: Tue, 14 Aug 2012 23:19:14 -0400
From: Vlad Yasevich <vyasevich@...il.com>
To: "Eric W. Biederman" <ebiederm@...ssion.com>
CC: David Miller <davem@...emloft.net>, linux-sctp@...r.kernel.org,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
Jan Ariyasu <jan.ariyasu@...com>,
Jan Ariyasu <jan.ariyasu@...il.com>,
Neil Horman <nhorman@...driver.com>,
Thomas Graf <tgraf@...radead.org>, Xi Wang <xi.wang@...il.com>
Subject: Re: [PATCH net-next 4/9] sctp: Make the address lists per network
namespace
On 08/06/2012 02:42 PM, Eric W. Biederman wrote:
>
> - Move the address lists into struct net
> - Add per network namespace initialization and cleanup
> - Pass around struct net so it is everywhere I need it.
> - Rename all of the global variable references into references
> to the variables moved into struct net
>
> Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
Acked-by: Vlad Yasevich <vyasevich@...il.com>
> ---
> include/net/net_namespace.h | 4 +
> include/net/netns/sctp.h | 21 +++++++
> include/net/sctp/sctp.h | 4 +-
> include/net/sctp/structs.h | 22 +-------
> net/sctp/associola.c | 3 +-
> net/sctp/bind_addr.c | 14 ++--
> net/sctp/ipv6.c | 17 +++---
> net/sctp/protocol.c | 141 +++++++++++++++++++++++++------------------
> net/sctp/socket.c | 7 +-
> 9 files changed, 131 insertions(+), 102 deletions(-)
> create mode 100644 include/net/netns/sctp.h
>
> diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
> index ae1cd6c..8ab5250 100644
> --- a/include/net/net_namespace.h
> +++ b/include/net/net_namespace.h
> @@ -15,6 +15,7 @@
> #include <net/netns/packet.h>
> #include <net/netns/ipv4.h>
> #include <net/netns/ipv6.h>
> +#include <net/netns/sctp.h>
> #include <net/netns/dccp.h>
> #include <net/netns/x_tables.h>
> #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
> @@ -80,6 +81,9 @@ struct net {
> #if IS_ENABLED(CONFIG_IPV6)
> struct netns_ipv6 ipv6;
> #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
> diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h
> new file mode 100644
> index 0000000..cbd684e
> --- /dev/null
> +++ b/include/net/netns/sctp.h
> @@ -0,0 +1,21 @@
> +#ifndef __NETNS_SCTP_H__
> +#define __NETNS_SCTP_H__
> +
> +struct netns_sctp {
> + /* This is the global local address list.
> + * We actively maintain this complete list of addresses on
> + * the system by catching address add/delete events.
> + *
> + * It is a list of sctp_sockaddr_entry.
> + */
> + struct list_head local_addr_list;
> + struct list_head addr_waitq;
> + struct timer_list addr_wq_timer;
> + struct list_head auto_asconf_splist;
> + spinlock_t addr_wq_lock;
> +
> + /* Lock that protects the local_addr_list writers */
> + spinlock_t local_addr_lock;
> +};
> +
> +#endif /* __NETNS_SCTP_H__ */
> diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
> index 640915a..00c9205 100644
> --- a/include/net/sctp/sctp.h
> +++ b/include/net/sctp/sctp.h
> @@ -115,12 +115,12 @@
> * sctp/protocol.c
> */
> extern struct sock *sctp_get_ctl_sock(void);
> -extern int sctp_copy_local_addr_list(struct sctp_bind_addr *,
> +extern int sctp_copy_local_addr_list(struct net *, struct sctp_bind_addr *,
> sctp_scope_t, gfp_t gfp,
> int flags);
> extern struct sctp_pf *sctp_get_pf_specific(sa_family_t family);
> extern int sctp_register_pf(struct sctp_pf *, sa_family_t);
> -extern void sctp_addr_wq_mgmt(struct sctp_sockaddr_entry *, int);
> +extern void sctp_addr_wq_mgmt(struct net *, struct sctp_sockaddr_entry *, int);
>
> /*
> * sctp/socket.c
> diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
> index c0563d1..6bdfcab 100644
> --- a/include/net/sctp/structs.h
> +++ b/include/net/sctp/structs.h
> @@ -205,21 +205,7 @@ extern struct sctp_globals {
> int port_hashsize;
> struct sctp_bind_hashbucket *port_hashtable;
>
> - /* This is the global local address list.
> - * We actively maintain this complete list of addresses on
> - * the system by catching address add/delete events.
> - *
> - * It is a list of sctp_sockaddr_entry.
> - */
> - struct list_head local_addr_list;
> int default_auto_asconf;
> - struct list_head addr_waitq;
> - struct timer_list addr_wq_timer;
> - struct list_head auto_asconf_splist;
> - spinlock_t addr_wq_lock;
> -
> - /* Lock that protects the local_addr_list writers */
> - spinlock_t addr_list_lock;
>
> /* Flag to indicate if addip is enabled. */
> int addip_enable;
> @@ -278,12 +264,6 @@ extern struct sctp_globals {
> #define sctp_assoc_hashtable (sctp_globals.assoc_hashtable)
> #define sctp_port_hashsize (sctp_globals.port_hashsize)
> #define sctp_port_hashtable (sctp_globals.port_hashtable)
> -#define sctp_local_addr_list (sctp_globals.local_addr_list)
> -#define sctp_local_addr_lock (sctp_globals.addr_list_lock)
> -#define sctp_auto_asconf_splist (sctp_globals.auto_asconf_splist)
> -#define sctp_addr_waitq (sctp_globals.addr_waitq)
> -#define sctp_addr_wq_timer (sctp_globals.addr_wq_timer)
> -#define sctp_addr_wq_lock (sctp_globals.addr_wq_lock)
> #define sctp_default_auto_asconf (sctp_globals.default_auto_asconf)
> #define sctp_scope_policy (sctp_globals.ipv4_scope_policy)
> #define sctp_addip_enable (sctp_globals.addip_enable)
> @@ -1241,7 +1221,7 @@ struct sctp_bind_addr {
>
> void sctp_bind_addr_init(struct sctp_bind_addr *, __u16 port);
> void sctp_bind_addr_free(struct sctp_bind_addr *);
> -int sctp_bind_addr_copy(struct sctp_bind_addr *dest,
> +int sctp_bind_addr_copy(struct net *net, struct sctp_bind_addr *dest,
> const struct sctp_bind_addr *src,
> sctp_scope_t scope, gfp_t gfp,
> int flags);
> diff --git a/net/sctp/associola.c b/net/sctp/associola.c
> index a3601f3..ed4930b 100644
> --- a/net/sctp/associola.c
> +++ b/net/sctp/associola.c
> @@ -1544,7 +1544,8 @@ int sctp_assoc_set_bind_addr_from_ep(struct sctp_association *asoc,
> if (asoc->peer.ipv6_address)
> flags |= SCTP_ADDR6_PEERSUPP;
>
> - return sctp_bind_addr_copy(&asoc->base.bind_addr,
> + return sctp_bind_addr_copy(sock_net(asoc->base.sk),
> + &asoc->base.bind_addr,
> &asoc->ep->base.bind_addr,
> scope, gfp, flags);
> }
> diff --git a/net/sctp/bind_addr.c b/net/sctp/bind_addr.c
> index 4ece451..a85ce4b 100644
> --- a/net/sctp/bind_addr.c
> +++ b/net/sctp/bind_addr.c
> @@ -52,8 +52,8 @@
> #include <net/sctp/sm.h>
>
> /* Forward declarations for internal helpers. */
> -static int sctp_copy_one_addr(struct sctp_bind_addr *, union sctp_addr *,
> - sctp_scope_t scope, gfp_t gfp,
> +static int sctp_copy_one_addr(struct net *, struct sctp_bind_addr *,
> + union sctp_addr *, sctp_scope_t scope, gfp_t gfp,
> int flags);
> static void sctp_bind_addr_clean(struct sctp_bind_addr *);
>
> @@ -62,7 +62,7 @@ static void sctp_bind_addr_clean(struct sctp_bind_addr *);
> /* Copy 'src' to 'dest' taking 'scope' into account. Omit addresses
> * in 'src' which have a broader scope than 'scope'.
> */
> -int sctp_bind_addr_copy(struct sctp_bind_addr *dest,
> +int sctp_bind_addr_copy(struct net *net, struct sctp_bind_addr *dest,
> const struct sctp_bind_addr *src,
> sctp_scope_t scope, gfp_t gfp,
> int flags)
> @@ -75,7 +75,7 @@ int sctp_bind_addr_copy(struct sctp_bind_addr *dest,
>
> /* Extract the addresses which are relevant for this scope. */
> list_for_each_entry(addr, &src->address_list, list) {
> - error = sctp_copy_one_addr(dest, &addr->a, scope,
> + error = sctp_copy_one_addr(net, dest, &addr->a, scope,
> gfp, flags);
> if (error < 0)
> goto out;
> @@ -87,7 +87,7 @@ int sctp_bind_addr_copy(struct sctp_bind_addr *dest,
> */
> if (list_empty(&dest->address_list) && (SCTP_SCOPE_GLOBAL == scope)) {
> list_for_each_entry(addr, &src->address_list, list) {
> - error = sctp_copy_one_addr(dest, &addr->a,
> + error = sctp_copy_one_addr(net, dest, &addr->a,
> SCTP_SCOPE_LINK, gfp,
> flags);
> if (error < 0)
> @@ -448,7 +448,7 @@ union sctp_addr *sctp_find_unmatch_addr(struct sctp_bind_addr *bp,
> }
>
> /* Copy out addresses from the global local address list. */
> -static int sctp_copy_one_addr(struct sctp_bind_addr *dest,
> +static int sctp_copy_one_addr(struct net *net, struct sctp_bind_addr *dest,
> union sctp_addr *addr,
> sctp_scope_t scope, gfp_t gfp,
> int flags)
> @@ -456,7 +456,7 @@ static int sctp_copy_one_addr(struct sctp_bind_addr *dest,
> int error = 0;
>
> if (sctp_is_any(NULL, addr)) {
> - error = sctp_copy_local_addr_list(dest, scope, gfp, flags);
> + error = sctp_copy_local_addr_list(net, dest, scope, gfp, flags);
> } else if (sctp_in_scope(addr, scope)) {
> /* Now that the address is in scope, check to see if
> * the address type is supported by local sock as
> diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
> index 2165a7e..bbf1534 100644
> --- a/net/sctp/ipv6.c
> +++ b/net/sctp/ipv6.c
> @@ -99,6 +99,7 @@ static int sctp_inet6addr_event(struct notifier_block *this, unsigned long ev,
> struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
> struct sctp_sockaddr_entry *addr = NULL;
> struct sctp_sockaddr_entry *temp;
> + struct net *net = dev_net(ifa->idev->dev);
> int found = 0;
>
> switch (ev) {
> @@ -110,27 +111,27 @@ static int sctp_inet6addr_event(struct notifier_block *this, unsigned long ev,
> addr->a.v6.sin6_addr = ifa->addr;
> addr->a.v6.sin6_scope_id = ifa->idev->dev->ifindex;
> addr->valid = 1;
> - spin_lock_bh(&sctp_local_addr_lock);
> - list_add_tail_rcu(&addr->list, &sctp_local_addr_list);
> - sctp_addr_wq_mgmt(addr, SCTP_ADDR_NEW);
> - spin_unlock_bh(&sctp_local_addr_lock);
> + spin_lock_bh(&net->sctp.local_addr_lock);
> + list_add_tail_rcu(&addr->list, &net->sctp.local_addr_list);
> + sctp_addr_wq_mgmt(net, addr, SCTP_ADDR_NEW);
> + spin_unlock_bh(&net->sctp.local_addr_lock);
> }
> break;
> case NETDEV_DOWN:
> - spin_lock_bh(&sctp_local_addr_lock);
> + spin_lock_bh(&net->sctp.local_addr_lock);
> list_for_each_entry_safe(addr, temp,
> - &sctp_local_addr_list, list) {
> + &net->sctp.local_addr_list, list) {
> if (addr->a.sa.sa_family == AF_INET6 &&
> ipv6_addr_equal(&addr->a.v6.sin6_addr,
> &ifa->addr)) {
> - sctp_addr_wq_mgmt(addr, SCTP_ADDR_DEL);
> + sctp_addr_wq_mgmt(net, addr, SCTP_ADDR_DEL);
> found = 1;
> addr->valid = 0;
> list_del_rcu(&addr->list);
> break;
> }
> }
> - spin_unlock_bh(&sctp_local_addr_lock);
> + spin_unlock_bh(&net->sctp.local_addr_lock);
> if (found)
> kfree_rcu(addr, rcu);
> break;
> diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
> index 1f89c4e..291e682 100644
> --- a/net/sctp/protocol.c
> +++ b/net/sctp/protocol.c
> @@ -201,29 +201,29 @@ static void sctp_v4_copy_addrlist(struct list_head *addrlist,
> /* Extract our IP addresses from the system and stash them in the
> * protocol structure.
> */
> -static void sctp_get_local_addr_list(void)
> +static void sctp_get_local_addr_list(struct net *net)
> {
> struct net_device *dev;
> struct list_head *pos;
> struct sctp_af *af;
>
> rcu_read_lock();
> - for_each_netdev_rcu(&init_net, dev) {
> + for_each_netdev_rcu(net, dev) {
> __list_for_each(pos, &sctp_address_families) {
> af = list_entry(pos, struct sctp_af, list);
> - af->copy_addrlist(&sctp_local_addr_list, dev);
> + af->copy_addrlist(&net->sctp.local_addr_list, dev);
> }
> }
> rcu_read_unlock();
> }
>
> /* Free the existing local addresses. */
> -static void sctp_free_local_addr_list(void)
> +static void sctp_free_local_addr_list(struct net *net)
> {
> struct sctp_sockaddr_entry *addr;
> struct list_head *pos, *temp;
>
> - list_for_each_safe(pos, temp, &sctp_local_addr_list) {
> + list_for_each_safe(pos, temp, &net->sctp.local_addr_list) {
> addr = list_entry(pos, struct sctp_sockaddr_entry, list);
> list_del(pos);
> kfree(addr);
> @@ -231,14 +231,14 @@ static void sctp_free_local_addr_list(void)
> }
>
> /* Copy the local addresses which are valid for 'scope' into 'bp'. */
> -int sctp_copy_local_addr_list(struct sctp_bind_addr *bp, sctp_scope_t scope,
> - gfp_t gfp, int copy_flags)
> +int sctp_copy_local_addr_list(struct net *net, struct sctp_bind_addr *bp,
> + sctp_scope_t scope, gfp_t gfp, int copy_flags)
> {
> struct sctp_sockaddr_entry *addr;
> int error = 0;
>
> rcu_read_lock();
> - list_for_each_entry_rcu(addr, &sctp_local_addr_list, list) {
> + list_for_each_entry_rcu(addr, &net->sctp.local_addr_list, list) {
> if (!addr->valid)
> continue;
> if (sctp_in_scope(&addr->a, scope)) {
> @@ -627,14 +627,15 @@ static void sctp_v4_ecn_capable(struct sock *sk)
>
> void sctp_addr_wq_timeout_handler(unsigned long arg)
> {
> + struct net *net = (struct net *)arg;
> struct sctp_sockaddr_entry *addrw, *temp;
> struct sctp_sock *sp;
>
> - spin_lock_bh(&sctp_addr_wq_lock);
> + spin_lock_bh(&net->sctp.addr_wq_lock);
>
> - list_for_each_entry_safe(addrw, temp, &sctp_addr_waitq, list) {
> + list_for_each_entry_safe(addrw, temp, &net->sctp.addr_waitq, list) {
> SCTP_DEBUG_PRINTK_IPADDR("sctp_addrwq_timo_handler: the first ent in wq %p is ",
> - " for cmd %d at entry %p\n", &sctp_addr_waitq, &addrw->a, addrw->state,
> + " for cmd %d at entry %p\n", &net->sctp.addr_waitq, &addrw->a, addrw->state,
> addrw);
>
> #if IS_ENABLED(CONFIG_IPV6)
> @@ -648,7 +649,7 @@ void sctp_addr_wq_timeout_handler(unsigned long arg)
> goto free_next;
>
> in6 = (struct in6_addr *)&addrw->a.v6.sin6_addr;
> - if (ipv6_chk_addr(&init_net, in6, NULL, 0) == 0 &&
> + if (ipv6_chk_addr(net, in6, NULL, 0) == 0 &&
> addrw->state == SCTP_ADDR_NEW) {
> unsigned long timeo_val;
>
> @@ -656,12 +657,12 @@ void sctp_addr_wq_timeout_handler(unsigned long arg)
> SCTP_ADDRESS_TICK_DELAY);
> timeo_val = jiffies;
> timeo_val += msecs_to_jiffies(SCTP_ADDRESS_TICK_DELAY);
> - mod_timer(&sctp_addr_wq_timer, timeo_val);
> + mod_timer(&net->sctp.addr_wq_timer, timeo_val);
> break;
> }
> }
> #endif
> - list_for_each_entry(sp, &sctp_auto_asconf_splist, auto_asconf_list) {
> + list_for_each_entry(sp, &net->sctp.auto_asconf_splist, auto_asconf_list) {
> struct sock *sk;
>
> sk = sctp_opt2sk(sp);
> @@ -679,31 +680,32 @@ free_next:
> list_del(&addrw->list);
> kfree(addrw);
> }
> - spin_unlock_bh(&sctp_addr_wq_lock);
> + spin_unlock_bh(&net->sctp.addr_wq_lock);
> }
>
> -static void sctp_free_addr_wq(void)
> +static void sctp_free_addr_wq(struct net *net)
> {
> struct sctp_sockaddr_entry *addrw;
> struct sctp_sockaddr_entry *temp;
>
> - spin_lock_bh(&sctp_addr_wq_lock);
> - del_timer(&sctp_addr_wq_timer);
> - list_for_each_entry_safe(addrw, temp, &sctp_addr_waitq, list) {
> + spin_lock_bh(&net->sctp.addr_wq_lock);
> + del_timer(&net->sctp.addr_wq_timer);
> + list_for_each_entry_safe(addrw, temp, &net->sctp.addr_waitq, list) {
> list_del(&addrw->list);
> kfree(addrw);
> }
> - spin_unlock_bh(&sctp_addr_wq_lock);
> + spin_unlock_bh(&net->sctp.addr_wq_lock);
> }
>
> /* lookup the entry for the same address in the addr_waitq
> * sctp_addr_wq MUST be locked
> */
> -static struct sctp_sockaddr_entry *sctp_addr_wq_lookup(struct sctp_sockaddr_entry *addr)
> +static struct sctp_sockaddr_entry *sctp_addr_wq_lookup(struct net *net,
> + struct sctp_sockaddr_entry *addr)
> {
> struct sctp_sockaddr_entry *addrw;
>
> - list_for_each_entry(addrw, &sctp_addr_waitq, list) {
> + list_for_each_entry(addrw, &net->sctp.addr_waitq, list) {
> if (addrw->a.sa.sa_family != addr->a.sa.sa_family)
> continue;
> if (addrw->a.sa.sa_family == AF_INET) {
> @@ -719,7 +721,7 @@ static struct sctp_sockaddr_entry *sctp_addr_wq_lookup(struct sctp_sockaddr_entr
> return NULL;
> }
>
> -void sctp_addr_wq_mgmt(struct sctp_sockaddr_entry *addr, int cmd)
> +void sctp_addr_wq_mgmt(struct net *net, struct sctp_sockaddr_entry *addr, int cmd)
> {
> struct sctp_sockaddr_entry *addrw;
> unsigned long timeo_val;
> @@ -730,9 +732,9 @@ void sctp_addr_wq_mgmt(struct sctp_sockaddr_entry *addr, int cmd)
> * new address after a couple of addition and deletion of that address
> */
>
> - spin_lock_bh(&sctp_addr_wq_lock);
> + spin_lock_bh(&net->sctp.addr_wq_lock);
> /* Offsets existing events in addr_wq */
> - addrw = sctp_addr_wq_lookup(addr);
> + addrw = sctp_addr_wq_lookup(net, addr);
> if (addrw) {
> if (addrw->state != cmd) {
> SCTP_DEBUG_PRINTK_IPADDR("sctp_addr_wq_mgmt offsets existing entry for %d ",
> @@ -741,27 +743,27 @@ void sctp_addr_wq_mgmt(struct sctp_sockaddr_entry *addr, int cmd)
> list_del(&addrw->list);
> kfree(addrw);
> }
> - spin_unlock_bh(&sctp_addr_wq_lock);
> + spin_unlock_bh(&net->sctp.addr_wq_lock);
> return;
> }
>
> /* OK, we have to add the new address to the wait queue */
> addrw = kmemdup(addr, sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC);
> if (addrw == NULL) {
> - spin_unlock_bh(&sctp_addr_wq_lock);
> + spin_unlock_bh(&net->sctp.addr_wq_lock);
> return;
> }
> addrw->state = cmd;
> - list_add_tail(&addrw->list, &sctp_addr_waitq);
> + list_add_tail(&addrw->list, &net->sctp.addr_waitq);
> SCTP_DEBUG_PRINTK_IPADDR("sctp_addr_wq_mgmt add new entry for cmd:%d ",
> - " in wq %p\n", addrw->state, &addrw->a, &sctp_addr_waitq);
> + " in wq %p\n", addrw->state, &addrw->a, &net->sctp.addr_waitq);
>
> - if (!timer_pending(&sctp_addr_wq_timer)) {
> + if (!timer_pending(&net->sctp.addr_wq_timer)) {
> timeo_val = jiffies;
> timeo_val += msecs_to_jiffies(SCTP_ADDRESS_TICK_DELAY);
> - mod_timer(&sctp_addr_wq_timer, timeo_val);
> + mod_timer(&net->sctp.addr_wq_timer, timeo_val);
> }
> - spin_unlock_bh(&sctp_addr_wq_lock);
> + spin_unlock_bh(&net->sctp.addr_wq_lock);
> }
>
> /* Event handler for inet address addition/deletion events.
> @@ -776,11 +778,9 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
> struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
> struct sctp_sockaddr_entry *addr = NULL;
> struct sctp_sockaddr_entry *temp;
> + struct net *net = dev_net(ifa->ifa_dev->dev);
> int found = 0;
>
> - if (!net_eq(dev_net(ifa->ifa_dev->dev), &init_net))
> - return NOTIFY_DONE;
> -
> switch (ev) {
> case NETDEV_UP:
> addr = kmalloc(sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC);
> @@ -789,27 +789,27 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
> addr->a.v4.sin_port = 0;
> addr->a.v4.sin_addr.s_addr = ifa->ifa_local;
> addr->valid = 1;
> - spin_lock_bh(&sctp_local_addr_lock);
> - list_add_tail_rcu(&addr->list, &sctp_local_addr_list);
> - sctp_addr_wq_mgmt(addr, SCTP_ADDR_NEW);
> - spin_unlock_bh(&sctp_local_addr_lock);
> + spin_lock_bh(&net->sctp.local_addr_lock);
> + list_add_tail_rcu(&addr->list, &net->sctp.local_addr_list);
> + sctp_addr_wq_mgmt(net, addr, SCTP_ADDR_NEW);
> + spin_unlock_bh(&net->sctp.local_addr_lock);
> }
> break;
> case NETDEV_DOWN:
> - spin_lock_bh(&sctp_local_addr_lock);
> + spin_lock_bh(&net->sctp.local_addr_lock);
> list_for_each_entry_safe(addr, temp,
> - &sctp_local_addr_list, list) {
> + &net->sctp.local_addr_list, list) {
> if (addr->a.sa.sa_family == AF_INET &&
> addr->a.v4.sin_addr.s_addr ==
> ifa->ifa_local) {
> - sctp_addr_wq_mgmt(addr, SCTP_ADDR_DEL);
> + sctp_addr_wq_mgmt(net, addr, SCTP_ADDR_DEL);
> found = 1;
> addr->valid = 0;
> list_del_rcu(&addr->list);
> break;
> }
> }
> - spin_unlock_bh(&sctp_local_addr_lock);
> + spin_unlock_bh(&net->sctp.local_addr_lock);
> if (found)
> kfree_rcu(addr, rcu);
> break;
> @@ -1194,6 +1194,36 @@ static void sctp_v4_del_protocol(void)
> unregister_inetaddr_notifier(&sctp_inetaddr_notifier);
> }
>
> +static int sctp_net_init(struct net *net)
> +{
> + /* Initialize the local address list. */
> + INIT_LIST_HEAD(&net->sctp.local_addr_list);
> + spin_lock_init(&net->sctp.local_addr_lock);
> + sctp_get_local_addr_list(net);
> +
> + /* Initialize the address event list */
> + INIT_LIST_HEAD(&net->sctp.addr_waitq);
> + INIT_LIST_HEAD(&net->sctp.auto_asconf_splist);
> + spin_lock_init(&net->sctp.addr_wq_lock);
> + net->sctp.addr_wq_timer.expires = 0;
> + setup_timer(&net->sctp.addr_wq_timer, sctp_addr_wq_timeout_handler,
> + (unsigned long)net);
> +
> + return 0;
> +}
> +
> +static void sctp_net_exit(struct net *net)
> +{
> + /* Free the local address list */
> + sctp_free_addr_wq(net);
> + sctp_free_local_addr_list(net);
> +}
> +
> +static struct pernet_operations sctp_net_ops = {
> + .init = sctp_net_init,
> + .exit = sctp_net_exit,
> +};
> +
> /* Initialize the universe into something sensible. */
> SCTP_STATIC __init int sctp_init(void)
> {
> @@ -1399,18 +1429,6 @@ SCTP_STATIC __init int sctp_init(void)
> sctp_v4_pf_init();
> sctp_v6_pf_init();
>
> - /* Initialize the local address list. */
> - INIT_LIST_HEAD(&sctp_local_addr_list);
> - spin_lock_init(&sctp_local_addr_lock);
> - sctp_get_local_addr_list();
> -
> - /* Initialize the address event list */
> - INIT_LIST_HEAD(&sctp_addr_waitq);
> - INIT_LIST_HEAD(&sctp_auto_asconf_splist);
> - spin_lock_init(&sctp_addr_wq_lock);
> - sctp_addr_wq_timer.expires = 0;
> - setup_timer(&sctp_addr_wq_timer, sctp_addr_wq_timeout_handler, 0);
> -
> status = sctp_v4_protosw_init();
>
> if (status)
> @@ -1426,6 +1444,10 @@ SCTP_STATIC __init int sctp_init(void)
> goto err_ctl_sock_init;
> }
>
> + status = register_pernet_subsys(&sctp_net_ops);
> + if (status)
> + goto err_register_pernet_subsys;
> +
> status = sctp_v4_add_protocol();
> if (status)
> goto err_add_protocol;
> @@ -1441,13 +1463,14 @@ out:
> err_v6_add_protocol:
> sctp_v4_del_protocol();
> err_add_protocol:
> + unregister_pernet_subsys(&sctp_net_ops);
> +err_register_pernet_subsys:
> inet_ctl_sock_destroy(sctp_ctl_sock);
> err_ctl_sock_init:
> sctp_v6_protosw_exit();
> err_v6_protosw_init:
> sctp_v4_protosw_exit();
> err_protosw_init:
> - sctp_free_local_addr_list();
> sctp_v4_pf_exit();
> sctp_v6_pf_exit();
> sctp_sysctl_unregister();
> @@ -1482,18 +1505,16 @@ SCTP_STATIC __exit void sctp_exit(void)
> /* Unregister with inet6/inet layers. */
> sctp_v6_del_protocol();
> sctp_v4_del_protocol();
> - sctp_free_addr_wq();
>
> /* Free the control endpoint. */
> inet_ctl_sock_destroy(sctp_ctl_sock);
>
> + unregister_pernet_subsys(&sctp_net_ops);
> +
> /* Free protosw registrations */
> sctp_v6_protosw_exit();
> sctp_v4_protosw_exit();
>
> - /* Free the local address list. */
> - sctp_free_local_addr_list();
> -
> /* Unregister with socket layer. */
> sctp_v6_pf_exit();
> sctp_v4_pf_exit();
> diff --git a/net/sctp/socket.c b/net/sctp/socket.c
> index 4316b0f..5b6dd0e 100644
> --- a/net/sctp/socket.c
> +++ b/net/sctp/socket.c
> @@ -3471,7 +3471,7 @@ static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval,
> sp->do_auto_asconf = 0;
> } else if (val && !sp->do_auto_asconf) {
> list_add_tail(&sp->auto_asconf_list,
> - &sctp_auto_asconf_splist);
> + &sock_net(sk)->sctp.auto_asconf_splist);
> sp->do_auto_asconf = 1;
> }
> return 0;
> @@ -3964,7 +3964,7 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
> sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
> if (sctp_default_auto_asconf) {
> list_add_tail(&sp->auto_asconf_list,
> - &sctp_auto_asconf_splist);
> + &sock_net(sk)->sctp.auto_asconf_splist);
> sp->do_auto_asconf = 1;
> } else
> sp->do_auto_asconf = 0;
> @@ -4653,9 +4653,10 @@ static int sctp_copy_laddrs(struct sock *sk, __u16 port, void *to,
> union sctp_addr temp;
> int cnt = 0;
> int addrlen;
> + struct net *net = sock_net(sk);
>
> rcu_read_lock();
> - list_for_each_entry_rcu(addr, &sctp_local_addr_list, list) {
> + list_for_each_entry_rcu(addr, &net->sctp.local_addr_list, list) {
> if (!addr->valid)
> continue;
>
>
--
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