Merge branch 'inet6_protocol-const'

Julia Lawall says:

====================
constify inet6_protocol structures

The inet6_protocol structure is only passed as the first argument to
inet6_add_protocol or inet6_del_protocol, both of which are declared as
const.  Thus the inet6_protocol structure itself can be const.

Done with the help of Coccinelle.

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@

static struct inet6_protocol i@p = { ... };

@ok1@
identifier r.i;
expression e1;
position p;
@@

 \(inet6_add_protocol\|inet6_del_protocol\)(&i@p,...)

@bad@
position p != {r.p,ok1.p};
identifier r.i;
struct inet6_protocol e;
@@

e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@

static
+const
 struct inet6_protocol i = { ... };
// </smpl>
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/ip6_gre.c

@@ -1080,7 +1080,7 @@ static void ip6gre_fb_tunnel_init(struct net_device *dev)
 }
 
 
-static struct inet6_protocol ip6gre_protocol __read_mostly = {
+static const struct inet6_protocol ip6gre_protocol = {
 	.handler     = gre_rcv,
 	.err_handler = ip6gre_err,
 	.flags       = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,

net/ipv6/tcp_ipv6.c

@@ -1945,7 +1945,7 @@ struct proto tcpv6_prot = {
 	.diag_destroy		= tcp_abort,
 };
 
-static struct inet6_protocol tcpv6_protocol = {
+static const struct inet6_protocol tcpv6_protocol = {
 	.early_demux	=	tcp_v6_early_demux,
 	.early_demux_handler =  tcp_v6_early_demux,
 	.handler	=	tcp_v6_rcv,

net/ipv6/udp.c

@@ -1448,7 +1448,7 @@ int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
 }
 #endif
 
-static struct inet6_protocol udpv6_protocol = {
+static const struct inet6_protocol udpv6_protocol = {
 	.early_demux	=	udp_v6_early_demux,
 	.early_demux_handler =  udp_v6_early_demux,
 	.handler	=	udpv6_rcv,

net/l2tp/l2tp_ip6.c

@@ -788,7 +788,7 @@ static struct inet_protosw l2tp_ip6_protosw = {
 	.ops		= &l2tp_ip6_ops,
 };
 
-static struct inet6_protocol l2tp_ip6_protocol __read_mostly = {
+static const struct inet6_protocol l2tp_ip6_protocol = {
 	.handler	= l2tp_ip6_recv,
 };