On 08/06/2012 02:46 PM, Eric W. Biederman wrote:

- Fix the sctp_af operations to work in all namespaces
- Enable sctp socket creation in all network namespaces.

Signed-off-by: "Eric W. Biederman" <ebied...@xmission.com>

Acked-by: Vlad Yasevich <vyasev...@gmail.com>

---
  net/sctp/ipv6.c     |   12 ++++++------
  net/sctp/protocol.c |    8 +++++---
  2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index bbf1534..a18cda6 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -582,7 +582,7 @@ static int sctp_v6_available(union sctp_addr *addr, struct 
sctp_sock *sp)
        if (!(type & IPV6_ADDR_UNICAST))
                return 0;

-       return ipv6_chk_addr(&init_net, in6, NULL, 0);
+       return ipv6_chk_addr(sock_net(&sp->inet.sk), in6, NULL, 0);
  }

  /* This function checks if the address is a valid address to be used for
@@ -859,14 +859,14 @@ static int sctp_inet6_bind_verify(struct sctp_sock *opt, 
union sctp_addr *addr)
                struct net_device *dev;

                if (type & IPV6_ADDR_LINKLOCAL) {
+                       struct net *net;
                        if (!addr->v6.sin6_scope_id)
                                return 0;
+                       net = sock_net(&opt->inet.sk);
                        rcu_read_lock();
-                       dev = dev_get_by_index_rcu(&init_net,
-                                                  addr->v6.sin6_scope_id);
+                       dev = dev_get_by_index_rcu(net, addr->v6.sin6_scope_id);
                        if (!dev ||
-                           !ipv6_chk_addr(&init_net, &addr->v6.sin6_addr,
-                                          dev, 0)) {
+                           !ipv6_chk_addr(net, &addr->v6.sin6_addr, dev, 0)) {
                                rcu_read_unlock();
                                return 0;
                        }
@@ -899,7 +899,7 @@ static int sctp_inet6_send_verify(struct sctp_sock *opt, 
union sctp_addr *addr)
                        if (!addr->v6.sin6_scope_id)
                                return 0;
                        rcu_read_lock();
-                       dev = dev_get_by_index_rcu(&init_net,
+                       dev = dev_get_by_index_rcu(sock_net(&opt->inet.sk),
                                                   addr->v6.sin6_scope_id);
                        rcu_read_unlock();
                        if (!dev)
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 72b3aa7..ab35691 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -367,7 +367,8 @@ static int sctp_v4_addr_valid(union sctp_addr *addr,
  /* Should this be available for binding?   */
  static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp)
  {
-       int ret = inet_addr_type(&init_net, addr->v4.sin_addr.s_addr);
+       struct net *net = sock_net(&sp->inet.sk);
+       int ret = inet_addr_type(net, addr->v4.sin_addr.s_addr);


        if (addr->v4.sin_addr.s_addr != htonl(INADDR_ANY) &&
@@ -454,7 +455,7 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union 
sctp_addr *saddr,
        SCTP_DEBUG_PRINTK("%s: DST:%pI4, SRC:%pI4 - ",
                          __func__, &fl4->daddr, &fl4->saddr);

-       rt = ip_route_output_key(&init_net, fl4);
+       rt = ip_route_output_key(sock_net(sk), fl4);
        if (!IS_ERR(rt))
                dst = &rt->dst;

@@ -500,7 +501,7 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union 
sctp_addr *saddr,
                    (AF_INET == laddr->a.sa.sa_family)) {
                        fl4->saddr = laddr->a.v4.sin_addr.s_addr;
                        fl4->fl4_sport = laddr->a.v4.sin_port;
-                       rt = ip_route_output_key(&init_net, fl4);
+                       rt = ip_route_output_key(sock_net(sk), fl4);
                        if (!IS_ERR(rt)) {
                                dst = &rt->dst;
                                goto out_unlock;
@@ -1033,6 +1034,7 @@ static const struct net_protocol sctp_protocol = {
        .handler     = sctp_rcv,
        .err_handler = sctp_v4_err,
        .no_policy   = 1,
+       .netns_ok    = 1,
  };

  /* IPv4 address related functions.  */


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