sctp: Push struct net down to sctp_chunk_event_lookup

This trickles up through sctp_sm_lookup_event up to sctp_do_sm
and up further into sctp_primitiv_NAME before the code reaches
places where struct net can be reliably found.

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

7 files changed, 51 insertions, 28 deletions

diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 8a1f27a7a001..6bcbecafe393 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1118,6 +1118,7 @@ static void sctp_assoc_bh_rcv(struct work_struct *work)
         struct sctp_association *asoc =
                 container_of(work, struct sctp_association,
                              base.inqueue.immediate);
+        struct net *net = sock_net(asoc->base.sk);
         struct sctp_endpoint *ep;
         struct sctp_chunk *chunk;
         struct sctp_inq *inqueue;
@@ -1150,13 +1151,13 @@ static void sctp_assoc_bh_rcv(struct work_struct *work)
                 if (sctp_chunk_is_data(chunk))
                         asoc->peer.last_data_from = chunk->transport;
                 else
-                        SCTP_INC_STATS(sock_net(asoc->base.sk), SCTP_MIB_INCTRLCHUNKS);
+                        SCTP_INC_STATS(net, SCTP_MIB_INCTRLCHUNKS);
 
                 if (chunk->transport)
                         chunk->transport->last_time_heard = jiffies;
 
                 /* Run through the state machine. */
-                error = sctp_do_sm(SCTP_EVENT_T_CHUNK, subtype,
+                error = sctp_do_sm(net, SCTP_EVENT_T_CHUNK, subtype,
                                    state, ep, asoc, chunk, GFP_ATOMIC);
 
                 /* Check to see if the association is freed in response to
diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 3edca80ab3a1..8315792ef2ba 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -413,6 +413,7 @@ static void sctp_endpoint_bh_rcv(struct work_struct *work)
                              base.inqueue.immediate);
         struct sctp_association *asoc;
         struct sock *sk;
+        struct net *net;
         struct sctp_transport *transport;
         struct sctp_chunk *chunk;
         struct sctp_inq *inqueue;
@@ -427,6 +428,7 @@ static void sctp_endpoint_bh_rcv(struct work_struct *work)
         asoc = NULL;
         inqueue = &ep->base.inqueue;
         sk = ep->base.sk;
+        net = sock_net(sk);
 
         while (NULL != (chunk = sctp_inq_pop(inqueue))) {
                 subtype = SCTP_ST_CHUNK(chunk->chunk_hdr->type);
@@ -483,7 +485,7 @@ normal:
                 if (chunk->transport)
                         chunk->transport->last_time_heard = jiffies;
 
-                error = sctp_do_sm(SCTP_EVENT_T_CHUNK, subtype, state,
+                error = sctp_do_sm(net, SCTP_EVENT_T_CHUNK, subtype, state,
                                    ep, asoc, chunk, GFP_ATOMIC);
 
                 if (error && chunk)
diff --git a/net/sctp/input.c b/net/sctp/input.c
index 530830151f04..a2ceb70ee06c 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -466,11 +466,13 @@ void sctp_icmp_proto_unreachable(struct sock *sk,
                 }
                         
         } else {
+                struct net *net = sock_net(sk);
+
                 if (timer_pending(&t->proto_unreach_timer) &&
                     del_timer(&t->proto_unreach_timer))
                         sctp_association_put(asoc);
 
-                sctp_do_sm(SCTP_EVENT_T_OTHER,
+                sctp_do_sm(net, SCTP_EVENT_T_OTHER,
                            SCTP_ST_OTHER(SCTP_EVENT_ICMP_PROTO_UNREACH),
                            asoc->state, asoc->ep, asoc, t,
                            GFP_ATOMIC);
diff --git a/net/sctp/primitive.c b/net/sctp/primitive.c
index 534c7eae9d15..794bb14decde 100644
--- a/net/sctp/primitive.c
+++ b/net/sctp/primitive.c
@@ -57,7 +57,7 @@
 
 #define DECLARE_PRIMITIVE(name) \
 /* This is called in the code as sctp_primitive_ ## name.  */ \
-int sctp_primitive_ ## name(struct sctp_association *asoc, \
+int sctp_primitive_ ## name(struct net *net, struct sctp_association *asoc, \
                             void *arg) { \
         int error = 0; \
         sctp_event_t event_type; sctp_subtype_t subtype; \
@@ -69,7 +69,7 @@ int sctp_primitive_ ## name(struct sctp_association *asoc, \
         state = asoc ? asoc->state : SCTP_STATE_CLOSED; \
         ep = asoc ? asoc->ep : NULL; \
         \
-        error = sctp_do_sm(event_type, subtype, state, ep, asoc, \
+        error = sctp_do_sm(net, event_type, subtype, state, ep, asoc,   \
                            arg, GFP_KERNEL); \
         return error; \
 }
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index fe99628e1257..02c4c1c066a7 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -251,6 +251,7 @@ void sctp_generate_t3_rtx_event(unsigned long peer)
         int error;
         struct sctp_transport *transport = (struct sctp_transport *) peer;
         struct sctp_association *asoc = transport->asoc;
+        struct net *net = sock_net(asoc->base.sk);
 
         /* Check whether a task is in the sock.  */
 
@@ -271,7 +272,7 @@ void sctp_generate_t3_rtx_event(unsigned long peer)
                 goto out_unlock;
 
         /* Run through the state machine.  */
-        error = sctp_do_sm(SCTP_EVENT_T_TIMEOUT,
+        error = sctp_do_sm(net, SCTP_EVENT_T_TIMEOUT,
                            SCTP_ST_TIMEOUT(SCTP_EVENT_TIMEOUT_T3_RTX),
                            asoc->state,
                            asoc->ep, asoc,
@@ -291,6 +292,7 @@ out_unlock:
 static void sctp_generate_timeout_event(struct sctp_association *asoc,
                                         sctp_event_timeout_t timeout_type)
 {
+        struct net *net = sock_net(asoc->base.sk);
         int error = 0;
 
         sctp_bh_lock_sock(asoc->base.sk);
@@ -312,7 +314,7 @@ static void sctp_generate_timeout_event(struct sctp_association *asoc,
                 goto out_unlock;
 
         /* Run through the state machine.  */
-        error = sctp_do_sm(SCTP_EVENT_T_TIMEOUT,
+        error = sctp_do_sm(net, SCTP_EVENT_T_TIMEOUT,
                            SCTP_ST_TIMEOUT(timeout_type),
                            asoc->state, asoc->ep, asoc,
                            (void *)timeout_type, GFP_ATOMIC);
@@ -371,6 +373,7 @@ void sctp_generate_heartbeat_event(unsigned long data)
         int error = 0;
         struct sctp_transport *transport = (struct sctp_transport *) data;
         struct sctp_association *asoc = transport->asoc;
+        struct net *net = sock_net(asoc->base.sk);
 
         sctp_bh_lock_sock(asoc->base.sk);
         if (sock_owned_by_user(asoc->base.sk)) {
@@ -388,7 +391,7 @@ void sctp_generate_heartbeat_event(unsigned long data)
         if (transport->dead)
                 goto out_unlock;
 
-        error = sctp_do_sm(SCTP_EVENT_T_TIMEOUT,
+        error = sctp_do_sm(net, SCTP_EVENT_T_TIMEOUT,
                            SCTP_ST_TIMEOUT(SCTP_EVENT_TIMEOUT_HEARTBEAT),
                            asoc->state, asoc->ep, asoc,
                            transport, GFP_ATOMIC);
@@ -408,6 +411,7 @@ void sctp_generate_proto_unreach_event(unsigned long data)
 {
         struct sctp_transport *transport = (struct sctp_transport *) data;
         struct sctp_association *asoc = transport->asoc;
+        struct net *net = sock_net(asoc->base.sk);
         
         sctp_bh_lock_sock(asoc->base.sk);
         if (sock_owned_by_user(asoc->base.sk)) {
@@ -426,7 +430,7 @@ void sctp_generate_proto_unreach_event(unsigned long data)
         if (asoc->base.dead)
                 goto out_unlock;
 
-        sctp_do_sm(SCTP_EVENT_T_OTHER,
+        sctp_do_sm(net, SCTP_EVENT_T_OTHER,
                    SCTP_ST_OTHER(SCTP_EVENT_ICMP_PROTO_UNREACH),
                    asoc->state, asoc->ep, asoc, transport, GFP_ATOMIC);
 
@@ -753,8 +757,10 @@ static int sctp_cmd_process_sack(sctp_cmd_seq_t *cmds,
         int err = 0;
 
         if (sctp_outq_sack(&asoc->outqueue, sackh)) {
+                struct net *net = sock_net(asoc->base.sk);
+
                 /* There are no more TSNs awaiting SACK.  */
-                err = sctp_do_sm(SCTP_EVENT_T_OTHER,
+                err = sctp_do_sm(net, SCTP_EVENT_T_OTHER,
                                  SCTP_ST_OTHER(SCTP_EVENT_NO_PENDING_TSN),
                                  asoc->state, asoc->ep, asoc, NULL,
                                  GFP_ATOMIC);
@@ -1042,6 +1048,8 @@ static int sctp_cmd_send_msg(struct sctp_association *asoc,
  */
 static void sctp_cmd_send_asconf(struct sctp_association *asoc)
 {
+        struct net *net = sock_net(asoc->base.sk);
+
         /* Send the next asconf chunk from the addip chunk
          * queue.
          */
@@ -1053,7 +1061,7 @@ static void sctp_cmd_send_asconf(struct sctp_association *asoc)
 
                 /* Hold the chunk until an ASCONF_ACK is received. */
                 sctp_chunk_hold(asconf);
-                if (sctp_primitive_ASCONF(asoc, asconf))
+                if (sctp_primitive_ASCONF(net, asoc, asconf))
                         sctp_chunk_free(asconf);
                 else
                         asoc->addip_last_asconf = asconf;
@@ -1089,7 +1097,7 @@ static void sctp_cmd_send_asconf(struct sctp_association *asoc)
  * If you want to understand all of lksctp, this is a
  * good place to start.
  */
-int sctp_do_sm(sctp_event_t event_type, sctp_subtype_t subtype,
+int sctp_do_sm(struct net *net, sctp_event_t event_type, sctp_subtype_t subtype,
                sctp_state_t state,
                struct sctp_endpoint *ep,
                struct sctp_association *asoc,
@@ -1110,7 +1118,7 @@ int sctp_do_sm(sctp_event_t event_type, sctp_subtype_t subtype,
         /* Look up the state function, run it, and then process the
          * side effects.  These three steps are the heart of lksctp.
          */
-        state_fn = sctp_sm_lookup_event(event_type, state, subtype);
+        state_fn = sctp_sm_lookup_event(net, event_type, state, subtype);
 
         sctp_init_cmd_seq(&commands);
 
diff --git a/net/sctp/sm_statetable.c b/net/sctp/sm_statetable.c
index 7c211a7f90f4..4a029d798287 100644
--- a/net/sctp/sm_statetable.c
+++ b/net/sctp/sm_statetable.c
@@ -59,7 +59,8 @@ other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_STATE_NUM_STATES];
 static const sctp_sm_table_entry_t
 timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES];
 
-static const sctp_sm_table_entry_t *sctp_chunk_event_lookup(sctp_cid_t cid,
+static const sctp_sm_table_entry_t *sctp_chunk_event_lookup(struct net *net,
+                                                            sctp_cid_t cid,
                                                             sctp_state_t state);
 
 
@@ -82,13 +83,14 @@ static const sctp_sm_table_entry_t bug = {
         rtn;                                                            \
 })
 
-const sctp_sm_table_entry_t *sctp_sm_lookup_event(sctp_event_t event_type,
+const sctp_sm_table_entry_t *sctp_sm_lookup_event(struct net *net,
+                                                  sctp_event_t event_type,
                                                   sctp_state_t state,
                                                   sctp_subtype_t event_subtype)
 {
         switch (event_type) {
         case SCTP_EVENT_T_CHUNK:
-                return sctp_chunk_event_lookup(event_subtype.chunk, state);
+                return sctp_chunk_event_lookup(net, event_subtype.chunk, state);
         case SCTP_EVENT_T_TIMEOUT:
                 return DO_LOOKUP(SCTP_EVENT_TIMEOUT_MAX, timeout,
                                  timeout_event_table);
@@ -906,7 +908,8 @@ static const sctp_sm_table_entry_t timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][S
         TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE,
 };
 
-static const sctp_sm_table_entry_t *sctp_chunk_event_lookup(sctp_cid_t cid,
+static const sctp_sm_table_entry_t *sctp_chunk_event_lookup(struct net *net,
+                                                            sctp_cid_t cid,
                                                             sctp_state_t state)
 {
         if (state > SCTP_STATE_MAX)
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 5b6dd0e3d1f6..a6a4226a922f 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -427,6 +427,7 @@ SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
 static int sctp_send_asconf(struct sctp_association *asoc,
                             struct sctp_chunk *chunk)
 {
+        struct net      *net = sock_net(asoc->base.sk);
         int             retval = 0;
 
         /* If there is an outstanding ASCONF chunk, queue it for later
@@ -439,7 +440,7 @@ static int sctp_send_asconf(struct sctp_association *asoc,
 
         /* Hold the chunk until an ASCONF_ACK is received. */
         sctp_chunk_hold(chunk);
-        retval = sctp_primitive_ASCONF(asoc, chunk);
+        retval = sctp_primitive_ASCONF(net, asoc, chunk);
         if (retval)
                 sctp_chunk_free(chunk);
         else
@@ -1050,6 +1051,7 @@ static int __sctp_connect(struct sock* sk,
                           int addrs_size,
                           sctp_assoc_t *assoc_id)
 {
+        struct net *net = sock_net(sk);
         struct sctp_sock *sp;
         struct sctp_endpoint *ep;
         struct sctp_association *asoc = NULL;
@@ -1200,7 +1202,7 @@ static int __sctp_connect(struct sock* sk,
                         goto out_free;
         }
 
-        err = sctp_primitive_ASSOCIATE(asoc, NULL);
+        err = sctp_primitive_ASSOCIATE(net, asoc, NULL);
         if (err < 0) {
                 goto out_free;
         }
@@ -1458,6 +1460,7 @@ SCTP_STATIC int sctp_getsockopt_connectx3(struct sock* sk, int len,
  */
 SCTP_STATIC void sctp_close(struct sock *sk, long timeout)
 {
+        struct net *net = sock_net(sk);
         struct sctp_endpoint *ep;
         struct sctp_association *asoc;
         struct list_head *pos, *temp;
@@ -1499,9 +1502,9 @@ SCTP_STATIC void sctp_close(struct sock *sk, long timeout)
 
                         chunk = sctp_make_abort_user(asoc, NULL, 0);
                         if (chunk)
-                                sctp_primitive_ABORT(asoc, chunk);
+                                sctp_primitive_ABORT(net, asoc, chunk);
                 } else
-                        sctp_primitive_SHUTDOWN(asoc, NULL);
+                        sctp_primitive_SHUTDOWN(net, asoc, NULL);
         }
 
         /* On a TCP-style socket, block for at most linger_time if set. */
@@ -1569,6 +1572,7 @@ SCTP_STATIC int sctp_msghdr_parse(const struct msghdr *, sctp_cmsgs_t *);
 SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
                              struct msghdr *msg, size_t msg_len)
 {
+        struct net *net = sock_net(sk);
         struct sctp_sock *sp;
         struct sctp_endpoint *ep;
         struct sctp_association *new_asoc=NULL, *asoc=NULL;
@@ -1714,7 +1718,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
                 if (sinfo_flags & SCTP_EOF) {
                         SCTP_DEBUG_PRINTK("Shutting down association: %p\n",
                                           asoc);
-                        sctp_primitive_SHUTDOWN(asoc, NULL);
+                        sctp_primitive_SHUTDOWN(net, asoc, NULL);
                         err = 0;
                         goto out_unlock;
                 }
@@ -1727,7 +1731,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
                         }
 
                         SCTP_DEBUG_PRINTK("Aborting association: %p\n", asoc);
-                        sctp_primitive_ABORT(asoc, chunk);
+                        sctp_primitive_ABORT(net, asoc, chunk);
                         err = 0;
                         goto out_unlock;
                 }
@@ -1900,7 +1904,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
 
         /* Auto-connect, if we aren't connected already. */
         if (sctp_state(asoc, CLOSED)) {
-                err = sctp_primitive_ASSOCIATE(asoc, NULL);
+                err = sctp_primitive_ASSOCIATE(net, asoc, NULL);
                 if (err < 0)
                         goto out_free;
                 SCTP_DEBUG_PRINTK("We associated primitively.\n");
@@ -1928,7 +1932,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
          * works that way today.  Keep it that way or this
          * breaks.
          */
-        err = sctp_primitive_SEND(asoc, datamsg);
+        err = sctp_primitive_SEND(net, asoc, datamsg);
         /* Did the lower layer accept the chunk? */
         if (err)
                 sctp_datamsg_free(datamsg);
@@ -2320,7 +2324,9 @@ static int sctp_apply_peer_addr_params(struct sctp_paddrparams *params,
         int error;
 
         if (params->spp_flags & SPP_HB_DEMAND && trans) {
-                error = sctp_primitive_REQUESTHEARTBEAT (trans->asoc, trans);
+                struct net *net = sock_net(trans->asoc->base.sk);
+
+                error = sctp_primitive_REQUESTHEARTBEAT(net, trans->asoc, trans);
                 if (error)
                         return error;
         }
@@ -4011,6 +4017,7 @@ SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
  */
 SCTP_STATIC void sctp_shutdown(struct sock *sk, int how)
 {
+        struct net *net = sock_net(sk);
         struct sctp_endpoint *ep;
         struct sctp_association *asoc;
 
@@ -4022,7 +4029,7 @@ SCTP_STATIC void sctp_shutdown(struct sock *sk, int how)
                 if (!list_empty(&ep->asocs)) {
                         asoc = list_entry(ep->asocs.next,
                                           struct sctp_association, asocs);
-                        sctp_primitive_SHUTDOWN(asoc, NULL);
+                        sctp_primitive_SHUTDOWN(net, asoc, NULL);
                 }
         }
 }