net: initial AF_XDP skeleton

Buildable skeleton of AF_XDP without any functionality. Just what it
takes to register a new address family.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

2 files changed, 6 insertions, 2 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 4cafe6a19167..5c508d26b367 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1471,7 +1471,9 @@ static inline u16 socket_type_to_security_class(int family, int type, int protoc
                         return SECCLASS_QIPCRTR_SOCKET;
                 case PF_SMC:
                         return SECCLASS_SMC_SOCKET;
-#if PF_MAX > 44
+                case PF_XDP:
+                        return SECCLASS_XDP_SOCKET;
+#if PF_MAX > 45
 #error New address family defined, please update this function.
 #endif
                 }
diff --git a/security/selinux/include/classmap.h b/security/selinux/include/classmap.h
index 7f0372426494..bd5fe0d3204a 100644
--- a/security/selinux/include/classmap.h
+++ b/security/selinux/include/classmap.h
@@ -240,9 +240,11 @@ struct security_class_mapping secclass_map[] = {
           { "manage_subnet", NULL } },
         { "bpf",
           {"map_create", "map_read", "map_write", "prog_load", "prog_run"} },
+        { "xdp_socket",
+          { COMMON_SOCK_PERMS, NULL } },
         { NULL }
   };
 
-#if PF_MAX > 44
+#if PF_MAX > 45
 #error New address family defined, please update secclass_map.
 #endif