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Date:   Wed, 15 Jan 2020 16:36:28 +0100
From:   Guillaume Nault <gnault@...hat.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Nicolas Dichtel <nicolas.dichtel@...nd.com>
Subject: [PATCH net-next v2 2/2] netns: constify exported functions

Mark function parameters as 'const' where possible.

Signed-off-by: Guillaume Nault <gnault@...hat.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
---
 include/net/net_namespace.h | 10 +++++-----
 net/core/net_namespace.c    |  6 +++---
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index b8ceaf0cd997..854d39ef1ca3 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -347,9 +347,9 @@ static inline struct net *read_pnet(const possible_net_t *pnet)
 #endif
 
 int peernet2id_alloc(struct net *net, struct net *peer, gfp_t gfp);
-int peernet2id(struct net *net, struct net *peer);
-bool peernet_has_id(struct net *net, struct net *peer);
-struct net *get_net_ns_by_id(struct net *net, int id);
+int peernet2id(const struct net *net, struct net *peer);
+bool peernet_has_id(const struct net *net, struct net *peer);
+struct net *get_net_ns_by_id(const struct net *net, int id);
 
 struct pernet_operations {
 	struct list_head list;
@@ -427,7 +427,7 @@ static inline void unregister_net_sysctl_table(struct ctl_table_header *header)
 }
 #endif
 
-static inline int rt_genid_ipv4(struct net *net)
+static inline int rt_genid_ipv4(const struct net *net)
 {
 	return atomic_read(&net->ipv4.rt_genid);
 }
@@ -459,7 +459,7 @@ static inline void rt_genid_bump_all(struct net *net)
 	rt_genid_bump_ipv6(net);
 }
 
-static inline int fnhe_genid(struct net *net)
+static inline int fnhe_genid(const struct net *net)
 {
 	return atomic_read(&net->fnhe_genid);
 }
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 85c565571c1c..fd0727670f34 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -268,7 +268,7 @@ int peernet2id_alloc(struct net *net, struct net *peer, gfp_t gfp)
 EXPORT_SYMBOL_GPL(peernet2id_alloc);
 
 /* This function returns, if assigned, the id of a peer netns. */
-int peernet2id(struct net *net, struct net *peer)
+int peernet2id(const struct net *net, struct net *peer)
 {
 	int id;
 
@@ -283,12 +283,12 @@ EXPORT_SYMBOL(peernet2id);
 /* This function returns true is the peer netns has an id assigned into the
  * current netns.
  */
-bool peernet_has_id(struct net *net, struct net *peer)
+bool peernet_has_id(const struct net *net, struct net *peer)
 {
 	return peernet2id(net, peer) >= 0;
 }
 
-struct net *get_net_ns_by_id(struct net *net, int id)
+struct net *get_net_ns_by_id(const struct net *net, int id)
 {
 	struct net *peer;
 
-- 
2.21.1

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