[PATCH] PCI: Fixup PCI driver shutdown

[powerpc.git] / net / xfrm / xfrm_state.c

diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 2537f26..8b9a474 100644 (file)
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1026,6 +1026,12 @@ void xfrm_state_delete_tunnel(struct xfrm_state *x)
 }
 EXPORT_SYMBOL(xfrm_state_delete_tunnel);
 
+/*
+ * This function is NOT optimal.  For example, with ESP it will give an
+ * MTU that's usually two bytes short of being optimal.  However, it will
+ * usually give an answer that's a multiple of 4 provided the input is
+ * also a multiple of 4.
+ */
 int xfrm_state_mtu(struct xfrm_state *x, int mtu)
 {
        int res = mtu;
@@ -1055,6 +1061,43 @@ int xfrm_state_mtu(struct xfrm_state *x, int mtu)
 }
 
 EXPORT_SYMBOL(xfrm_state_mtu);
+
+int xfrm_init_state(struct xfrm_state *x)
+{
+       struct xfrm_state_afinfo *afinfo;
+       int family = x->props.family;
+       int err;
+
+       err = -EAFNOSUPPORT;
+       afinfo = xfrm_state_get_afinfo(family);
+       if (!afinfo)
+               goto error;
+
+       err = 0;
+       if (afinfo->init_flags)
+               err = afinfo->init_flags(x);
+
+       xfrm_state_put_afinfo(afinfo);
+
+       if (err)
+               goto error;
+
+       err = -EPROTONOSUPPORT;
+       x->type = xfrm_get_type(x->id.proto, family);
+       if (x->type == NULL)
+               goto error;
+
+       err = x->type->init_state(x);
+       if (err)
+               goto error;
+
+       x->km.state = XFRM_STATE_VALID;
+
+error:
+       return err;
+}
+
+EXPORT_SYMBOL(xfrm_init_state);
  
 void __init xfrm_state_init(void)
 {