Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (32 commits)
  [NetLabel]: correct usage of RCU locking
  [TCP]: fix D-SACK cwnd handling
  [NET] napi: use non-interruptible sleep in napi_disable
  [SCTP] net/sctp/auth.c: make 3 functions static
  [TCP]: Add missing I/O AT code to ipv6 side.
  [SCTP]: #if 0 sctp_update_copy_cksum()
  [INET]: Unexport icmpmsg_statistics
  [NET]: Unexport sock_enable_timestamp().
  [TCP]: Make tcp_match_skb_to_sack() static.
  [IRDA]: Make ircomm_tty static.
  [NET] fs/proc/proc_net.c: make a struct static
  [NET] dev_change_name: ignore changes to same name
  [NET]: Document some simple rules for actions
  [NET_CLS_ACT]: Use skb_act_clone
  [NET_CLS_ACT]: Introduce skb_act_clone
  [TCP]: Fix scatterlist handling in MD5 signature support.
  [IPSEC]: Fix scatterlist handling in skb_icv_walk().
  [IPSEC]: Add missing sg_init_table() calls to ESP.
  [CRYPTO]: Initialize TCRYPT on-stack scatterlist objects correctly.
  [CRYPTO]: HMAC needs some more scatterlist fixups.
  ...

3 files changed, 12 insertions, 33 deletions

diff --git a/net/netlabel/netlabel_domainhash.c b/net/netlabel/netlabel_domainhash.c
index b6c844b7e1c1..b3675bd7db33 100644
--- a/net/netlabel/netlabel_domainhash.c
+++ b/net/netlabel/netlabel_domainhash.c
@@ -178,11 +178,9 @@ int netlbl_domhsh_init(u32 size)
         for (iter = 0; iter < hsh_tbl->size; iter++)
                 INIT_LIST_HEAD(&hsh_tbl->tbl[iter]);
 
-        rcu_read_lock();
         spin_lock(&netlbl_domhsh_lock);
         rcu_assign_pointer(netlbl_domhsh, hsh_tbl);
         spin_unlock(&netlbl_domhsh_lock);
-        rcu_read_unlock();
 
         return 0;
 }
@@ -222,7 +220,6 @@ int netlbl_domhsh_add(struct netlbl_dom_map *entry,
         entry->valid = 1;
         INIT_RCU_HEAD(&entry->rcu);
 
-        ret_val = 0;
         rcu_read_lock();
         if (entry->domain != NULL) {
                 bkt = netlbl_domhsh_hash(entry->domain);
@@ -233,7 +230,7 @@ int netlbl_domhsh_add(struct netlbl_dom_map *entry,
                 else
                         ret_val = -EEXIST;
                 spin_unlock(&netlbl_domhsh_lock);
-        } else if (entry->domain == NULL) {
+        } else {
                 INIT_LIST_HEAD(&entry->list);
                 spin_lock(&netlbl_domhsh_def_lock);
                 if (rcu_dereference(netlbl_domhsh_def) == NULL)
@@ -241,9 +238,7 @@ int netlbl_domhsh_add(struct netlbl_dom_map *entry,
                 else
                         ret_val = -EEXIST;
                 spin_unlock(&netlbl_domhsh_def_lock);
-        } else
-                ret_val = -EINVAL;
-
+        }
         audit_buf = netlbl_audit_start_common(AUDIT_MAC_MAP_ADD, audit_info);
         if (audit_buf != NULL) {
                 audit_log_format(audit_buf,
@@ -262,7 +257,6 @@ int netlbl_domhsh_add(struct netlbl_dom_map *entry,
                 audit_log_format(audit_buf, " res=%u", ret_val == 0 ? 1 : 0);
                 audit_log_end(audit_buf);
         }
-
         rcu_read_unlock();
 
         if (ret_val != 0) {
@@ -313,38 +307,30 @@ int netlbl_domhsh_remove(const char *domain, struct netlbl_audit *audit_info)
         struct audit_buffer *audit_buf;
 
         rcu_read_lock();
-        if (domain != NULL)
-                entry = netlbl_domhsh_search(domain, 0);
-        else
-                entry = netlbl_domhsh_search(domain, 1);
+        entry = netlbl_domhsh_search(domain, (domain != NULL ? 0 : 1));
         if (entry == NULL)
                 goto remove_return;
         switch (entry->type) {
-        case NETLBL_NLTYPE_UNLABELED:
-                break;
         case NETLBL_NLTYPE_CIPSOV4:
-                ret_val = cipso_v4_doi_domhsh_remove(entry->type_def.cipsov4,
-                                                     entry->domain);
-                if (ret_val != 0)
-                        goto remove_return;
+                cipso_v4_doi_domhsh_remove(entry->type_def.cipsov4,
+                                           entry->domain);
                 break;
         }
-        ret_val = 0;
         if (entry != rcu_dereference(netlbl_domhsh_def)) {
                 spin_lock(&netlbl_domhsh_lock);
                 if (entry->valid) {
                         entry->valid = 0;
                         list_del_rcu(&entry->list);
-                } else
-                        ret_val = -ENOENT;
+                        ret_val = 0;
+                }
                 spin_unlock(&netlbl_domhsh_lock);
         } else {
                 spin_lock(&netlbl_domhsh_def_lock);
                 if (entry->valid) {
                         entry->valid = 0;
                         rcu_assign_pointer(netlbl_domhsh_def, NULL);
-                } else
-                        ret_val = -ENOENT;
+                        ret_val = 0;
+                }
                 spin_unlock(&netlbl_domhsh_def_lock);
         }
 
@@ -357,11 +343,10 @@ int netlbl_domhsh_remove(const char *domain, struct netlbl_audit *audit_info)
                 audit_log_end(audit_buf);
         }
 
-        if (ret_val == 0)
-                call_rcu(&entry->rcu, netlbl_domhsh_free_entry);
-
 remove_return:
         rcu_read_unlock();
+        if (ret_val == 0)
+                call_rcu(&entry->rcu, netlbl_domhsh_free_entry);
         return ret_val;
 }
 
diff --git a/net/netlabel/netlabel_mgmt.c b/net/netlabel/netlabel_mgmt.c
index 5315dacc5222..56483377997a 100644
--- a/net/netlabel/netlabel_mgmt.c
+++ b/net/netlabel/netlabel_mgmt.c
@@ -85,11 +85,9 @@ static const struct nla_policy netlbl_mgmt_genl_policy[NLBL_MGMT_A_MAX + 1] = {
  */
 void netlbl_mgmt_protocount_inc(void)
 {
-        rcu_read_lock();
         spin_lock(&netlabel_mgmt_protocount_lock);
         netlabel_mgmt_protocount++;
         spin_unlock(&netlabel_mgmt_protocount_lock);
-        rcu_read_unlock();
 }
 
 /**
@@ -103,12 +101,10 @@ void netlbl_mgmt_protocount_inc(void)
  */
 void netlbl_mgmt_protocount_dec(void)
 {
-        rcu_read_lock();
         spin_lock(&netlabel_mgmt_protocount_lock);
         if (netlabel_mgmt_protocount > 0)
                 netlabel_mgmt_protocount--;
         spin_unlock(&netlabel_mgmt_protocount_lock);
-        rcu_read_unlock();
 }
 
 /**
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index 5c303c68af1d..348292450deb 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -84,12 +84,10 @@ static void netlbl_unlabel_acceptflg_set(u8 value,
         struct audit_buffer *audit_buf;
         u8 old_val;
 
-        rcu_read_lock();
-        old_val = netlabel_unlabel_acceptflg;
         spin_lock(&netlabel_unlabel_acceptflg_lock);
+        old_val = netlabel_unlabel_acceptflg;
         netlabel_unlabel_acceptflg = value;
         spin_unlock(&netlabel_unlabel_acceptflg_lock);
-        rcu_read_unlock();
 
         audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_ALLOW,
                                               audit_info);