sctp: Make sysctl tunables per net

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 39 insertions, 26 deletions

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index a6a4226a922f..d37d24ff197f 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -516,6 +516,7 @@ static int sctp_send_asconf_add_ip(struct sock		*sk,
                                    struct sockaddr      *addrs,
                                    int                  addrcnt)
 {
+        struct net *net = sock_net(sk);
         struct sctp_sock                *sp;
         struct sctp_endpoint            *ep;
         struct sctp_association         *asoc;
@@ -530,7 +531,7 @@ static int sctp_send_asconf_add_ip(struct sock		*sk,
         int                             i;
         int                             retval = 0;
 
-        if (!sctp_addip_enable)
+        if (!net->sctp.addip_enable)
                 return retval;
 
         sp = sctp_sk(sk);
@@ -718,6 +719,7 @@ static int sctp_send_asconf_del_ip(struct sock		*sk,
                                    struct sockaddr      *addrs,
                                    int                  addrcnt)
 {
+        struct net *net = sock_net(sk);
         struct sctp_sock        *sp;
         struct sctp_endpoint    *ep;
         struct sctp_association *asoc;
@@ -733,7 +735,7 @@ static int sctp_send_asconf_del_ip(struct sock		*sk,
         int                     stored = 0;
 
         chunk = NULL;
-        if (!sctp_addip_enable)
+        if (!net->sctp.addip_enable)
                 return retval;
 
         sp = sctp_sk(sk);
@@ -3039,6 +3041,7 @@ static int sctp_setsockopt_maxseg(struct sock *sk, char __user *optval, unsigned
 static int sctp_setsockopt_peer_primary_addr(struct sock *sk, char __user *optval,
                                              unsigned int optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_sock        *sp;
         struct sctp_association *asoc = NULL;
         struct sctp_setpeerprim prim;
@@ -3048,7 +3051,7 @@ static int sctp_setsockopt_peer_primary_addr(struct sock *sk, char __user *optva
 
         sp = sctp_sk(sk);
 
-        if (!sctp_addip_enable)
+        if (!net->sctp.addip_enable)
                 return -EPERM;
 
         if (optlen != sizeof(struct sctp_setpeerprim))
@@ -3285,9 +3288,10 @@ static int sctp_setsockopt_auth_chunk(struct sock *sk,
                                       char __user *optval,
                                       unsigned int optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_authchunk val;
 
-        if (!sctp_auth_enable)
+        if (!net->sctp.auth_enable)
                 return -EACCES;
 
         if (optlen != sizeof(struct sctp_authchunk))
@@ -3317,11 +3321,12 @@ static int sctp_setsockopt_hmac_ident(struct sock *sk,
                                       char __user *optval,
                                       unsigned int optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_hmacalgo *hmacs;
         u32 idents;
         int err;
 
-        if (!sctp_auth_enable)
+        if (!net->sctp.auth_enable)
                 return -EACCES;
 
         if (optlen < sizeof(struct sctp_hmacalgo))
@@ -3354,11 +3359,12 @@ static int sctp_setsockopt_auth_key(struct sock *sk,
                                     char __user *optval,
                                     unsigned int optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_authkey *authkey;
         struct sctp_association *asoc;
         int ret;
 
-        if (!sctp_auth_enable)
+        if (!net->sctp.auth_enable)
                 return -EACCES;
 
         if (optlen <= sizeof(struct sctp_authkey))
@@ -3395,10 +3401,11 @@ static int sctp_setsockopt_active_key(struct sock *sk,
                                       char __user *optval,
                                       unsigned int optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_authkeyid val;
         struct sctp_association *asoc;
 
-        if (!sctp_auth_enable)
+        if (!net->sctp.auth_enable)
                 return -EACCES;
 
         if (optlen != sizeof(struct sctp_authkeyid))
@@ -3423,10 +3430,11 @@ static int sctp_setsockopt_del_key(struct sock *sk,
                                    char __user *optval,
                                    unsigned int optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_authkeyid val;
         struct sctp_association *asoc;
 
-        if (!sctp_auth_enable)
+        if (!net->sctp.auth_enable)
                 return -EACCES;
 
         if (optlen != sizeof(struct sctp_authkeyid))
@@ -3849,6 +3857,7 @@ out:
  */
 SCTP_STATIC int sctp_init_sock(struct sock *sk)
 {
+        struct net *net = sock_net(sk);
         struct sctp_endpoint *ep;
         struct sctp_sock *sp;
 
@@ -3878,7 +3887,7 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
         sp->default_timetolive = 0;
 
         sp->default_rcv_context = 0;
-        sp->max_burst = sctp_max_burst;
+        sp->max_burst = net->sctp.max_burst;
 
         /* Initialize default setup parameters. These parameters
          * can be modified with the SCTP_INITMSG socket option or
@@ -3886,24 +3895,24 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
          */
         sp->initmsg.sinit_num_ostreams   = sctp_max_outstreams;
         sp->initmsg.sinit_max_instreams  = sctp_max_instreams;
-        sp->initmsg.sinit_max_attempts   = sctp_max_retrans_init;
-        sp->initmsg.sinit_max_init_timeo = sctp_rto_max;
+        sp->initmsg.sinit_max_attempts   = net->sctp.max_retrans_init;
+        sp->initmsg.sinit_max_init_timeo = net->sctp.rto_max;
 
         /* Initialize default RTO related parameters.  These parameters can
          * be modified for with the SCTP_RTOINFO socket option.
          */
-        sp->rtoinfo.srto_initial = sctp_rto_initial;
-        sp->rtoinfo.srto_max     = sctp_rto_max;
-        sp->rtoinfo.srto_min     = sctp_rto_min;
+        sp->rtoinfo.srto_initial = net->sctp.rto_initial;
+        sp->rtoinfo.srto_max     = net->sctp.rto_max;
+        sp->rtoinfo.srto_min     = net->sctp.rto_min;
 
         /* Initialize default association related parameters. These parameters
          * can be modified with the SCTP_ASSOCINFO socket option.
          */
-        sp->assocparams.sasoc_asocmaxrxt = sctp_max_retrans_association;
+        sp->assocparams.sasoc_asocmaxrxt = net->sctp.max_retrans_association;
         sp->assocparams.sasoc_number_peer_destinations = 0;
         sp->assocparams.sasoc_peer_rwnd = 0;
         sp->assocparams.sasoc_local_rwnd = 0;
-        sp->assocparams.sasoc_cookie_life = sctp_valid_cookie_life;
+        sp->assocparams.sasoc_cookie_life = net->sctp.valid_cookie_life;
 
         /* Initialize default event subscriptions. By default, all the
          * options are off.
@@ -3913,10 +3922,10 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
         /* Default Peer Address Parameters.  These defaults can
          * be modified via SCTP_PEER_ADDR_PARAMS
          */
-        sp->hbinterval  = sctp_hb_interval;
-        sp->pathmaxrxt  = sctp_max_retrans_path;
+        sp->hbinterval  = net->sctp.hb_interval;
+        sp->pathmaxrxt  = net->sctp.max_retrans_path;
         sp->pathmtu     = 0; // allow default discovery
-        sp->sackdelay   = sctp_sack_timeout;
+        sp->sackdelay   = net->sctp.sack_timeout;
         sp->sackfreq    = 2;
         sp->param_flags = SPP_HB_ENABLE |
                           SPP_PMTUD_ENABLE |
@@ -3967,10 +3976,10 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
 
         local_bh_disable();
         percpu_counter_inc(&sctp_sockets_allocated);
-        sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
-        if (sctp_default_auto_asconf) {
+        sock_prot_inuse_add(net, sk->sk_prot, 1);
+        if (net->sctp.default_auto_asconf) {
                 list_add_tail(&sp->auto_asconf_list,
-                    &sock_net(sk)->sctp.auto_asconf_splist);
+                    &net->sctp.auto_asconf_splist);
                 sp->do_auto_asconf = 1;
         } else
                 sp->do_auto_asconf = 0;
@@ -5307,12 +5316,13 @@ static int sctp_getsockopt_maxburst(struct sock *sk, int len,
 static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
                                     char __user *optval, int __user *optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_hmacalgo  __user *p = (void __user *)optval;
         struct sctp_hmac_algo_param *hmacs;
         __u16 data_len = 0;
         u32 num_idents;
 
-        if (!sctp_auth_enable)
+        if (!net->sctp.auth_enable)
                 return -EACCES;
 
         hmacs = sctp_sk(sk)->ep->auth_hmacs_list;
@@ -5336,10 +5346,11 @@ static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
 static int sctp_getsockopt_active_key(struct sock *sk, int len,
                                     char __user *optval, int __user *optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_authkeyid val;
         struct sctp_association *asoc;
 
-        if (!sctp_auth_enable)
+        if (!net->sctp.auth_enable)
                 return -EACCES;
 
         if (len < sizeof(struct sctp_authkeyid))
@@ -5368,6 +5379,7 @@ static int sctp_getsockopt_active_key(struct sock *sk, int len,
 static int sctp_getsockopt_peer_auth_chunks(struct sock *sk, int len,
                                     char __user *optval, int __user *optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_authchunks __user *p = (void __user *)optval;
         struct sctp_authchunks val;
         struct sctp_association *asoc;
@@ -5375,7 +5387,7 @@ static int sctp_getsockopt_peer_auth_chunks(struct sock *sk, int len,
         u32    num_chunks = 0;
         char __user *to;
 
-        if (!sctp_auth_enable)
+        if (!net->sctp.auth_enable)
                 return -EACCES;
 
         if (len < sizeof(struct sctp_authchunks))
@@ -5411,6 +5423,7 @@ num:
 static int sctp_getsockopt_local_auth_chunks(struct sock *sk, int len,
                                     char __user *optval, int __user *optlen)
 {
+        struct net *net = sock_net(sk);
         struct sctp_authchunks __user *p = (void __user *)optval;
         struct sctp_authchunks val;
         struct sctp_association *asoc;
@@ -5418,7 +5431,7 @@ static int sctp_getsockopt_local_auth_chunks(struct sock *sk, int len,
         u32    num_chunks = 0;
         char __user *to;
 
-        if (!sctp_auth_enable)
+        if (!net->sctp.auth_enable)
                 return -EACCES;
 
         if (len < sizeof(struct sctp_authchunks))