[XFRM]: constify 'struct xfrm_type'

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index fb0d07a..379c8e0 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -515,7 +515,7 @@
 	kfree(ahp);
 }
 
-static struct xfrm_type ah6_type =
+static const struct xfrm_type ah6_type =
 {
 	.description	= "AH6",
 	.owner		= THIS_MODULE,
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index ca48c56..8e0f142 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -538,7 +538,7 @@
 	return err;
 }
 
-static struct xfrm_type esp6_type =
+static const struct xfrm_type esp6_type =
 {
 	.description	= "ESP6",
 	.owner	     	= THIS_MODULE,
diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index 710325e..b900395 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -453,7 +453,7 @@
 	goto out;
 }
 
-static struct xfrm_type ipcomp6_type =
+static const struct xfrm_type ipcomp6_type =
 {
 	.description	= "IPCOMP6",
 	.owner		= THIS_MODULE,
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 49d3966..cd8a5bd 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -330,7 +330,7 @@
 {
 }
 
-static struct xfrm_type mip6_destopt_type =
+static const struct xfrm_type mip6_destopt_type =
 {
 	.description	= "MIP6DESTOPT",
 	.owner		= THIS_MODULE,
@@ -462,7 +462,7 @@
 {
 }
 
-static struct xfrm_type mip6_rthdr_type =
+static const struct xfrm_type mip6_rthdr_type =
 {
 	.description	= "MIP6RT",
 	.owner		= THIS_MODULE,
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index fae90ff..639fe8a 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -319,7 +319,7 @@
 	xfrm6_tunnel_free_spi((xfrm_address_t *)&x->props.saddr);
 }
 
-static struct xfrm_type xfrm6_tunnel_type = {
+static const struct xfrm_type xfrm6_tunnel_type = {
 	.description	= "IP6IP6",
 	.owner          = THIS_MODULE,
 	.proto		= IPPROTO_IPV6,