Merge branch 'next-s3c-fixes' of git://aeryn.fluff.org.uk/bjdooks/linux

[~andy/linux] / net / sctp / bind_addr.c

diff --git a/net/sctp/bind_addr.c b/net/sctp/bind_addr.c
index 6d5944a745d4e3d709ef2660389638d65882a1bc..13a6fba410776bef83c73ce9a6eadc65ad9493ee 100644 (file)
--- a/net/sctp/bind_addr.c
+++ b/net/sctp/bind_addr.c
@@ -510,9 +510,28 @@ int sctp_in_scope(const union sctp_addr *addr, sctp_scope_t scope)
         * of requested destination address, sender and receiver
         * SHOULD include all of its addresses with level greater
         * than or equal to L.
+        *
+        * Address scoping can be selectively controlled via sysctl
+        * option
         */
-       if (addr_scope <= scope)
+       switch (sctp_scope_policy) {
+       case SCTP_SCOPE_POLICY_DISABLE:
                return 1;
+       case SCTP_SCOPE_POLICY_ENABLE:
+               if (addr_scope <= scope)
+                       return 1;
+               break;
+       case SCTP_SCOPE_POLICY_PRIVATE:
+               if (addr_scope <= scope || SCTP_SCOPE_PRIVATE == addr_scope)
+                       return 1;
+               break;
+       case SCTP_SCOPE_POLICY_LINK:
+               if (addr_scope <= scope || SCTP_SCOPE_LINK == addr_scope)
+                       return 1;
+               break;
+       default:
+               break;
+       }
 
        return 0;
 }