netdev - [PATCH net-next] ipv4: Make ip_idents

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Date:   Fri, 28 Jan 2022 16:53:47 -0700
From:   David Ahern <dsahern@...nel.org>
To:     netdev@...r.kernel.org
Cc:     David Ahern <dsahern@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next] ipv4: Make ip_idents_reserve static

ip_idents_reserve is only used in net/ipv4/route.c. Make it static
and remove the export.

Signed-off-by: David Ahern <dsahern@...nel.org>
Cc: Eric Dumazet <edumazet@...gle.com>
---
 include/net/ip.h | 1 -
 net/ipv4/route.c | 3 +--
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/include/net/ip.h b/include/net/ip.h
index b51bae43b0dd..4fcb48598d2d 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -517,7 +517,6 @@ void ip_dst_metrics_put(struct dst_entry *dst)
 		kfree(p);
 }
 
-u32 ip_idents_reserve(u32 hash, int segs);
 void __ip_select_ident(struct net *net, struct iphdr *iph, int segs);
 
 static inline void ip_select_ident_segs(struct net *net, struct sk_buff *skb,
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index e42e283b5515..8b35075088e1 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -457,7 +457,7 @@ static u32 *ip_tstamps __read_mostly;
  * if one generator is seldom used. This makes hard for an attacker
  * to infer how many packets were sent between two points in time.
  */
-u32 ip_idents_reserve(u32 hash, int segs)
+static u32 ip_idents_reserve(u32 hash, int segs)
 {
 	u32 bucket, old, now = (u32)jiffies;
 	atomic_t *p_id;
@@ -478,7 +478,6 @@ u32 ip_idents_reserve(u32 hash, int segs)
 	 */
 	return atomic_add_return(segs + delta, p_id) - segs;
 }
-EXPORT_SYMBOL(ip_idents_reserve);
 
 void __ip_select_ident(struct net *net, struct iphdr *iph, int segs)
 {
-- 
2.25.1