linux-kernel - [PATCH 0/2] constify inet6

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Date:   Fri, 28 Jul 2017 22:18:56 +0200
From:   Julia Lawall <Julia.Lawall@...6.fr>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     kernel-janitors@...r.kernel.org, bhumirks@...il.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] 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>

---

 net/ipv6/ip6_gre.c  |    2 +-
 net/ipv6/tcp_ipv6.c |    2 +-
 net/ipv6/udp.c      |    2 +-
 net/l2tp/l2tp_ip6.c |    2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)