netdev - [PATCH 2/3] inetpeer: Mark metrics as "new" in fresh inetpeer entries.

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Message-Id: <20110127.150137.70190267.davem@davemloft.net>
Date:	Thu, 27 Jan 2011 15:01:37 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	netdev@...r.kernel.org
Subject: [PATCH 2/3] inetpeer: Mark metrics as "new" in fresh inetpeer
 entries.


Set the RTAX_LOCKED metric to INETPEER_METRICS_NEW (basically,
all ones) on fresh inetpeer entries.

This way code can determine if default metrics have been loaded
in from a routing table entry already.

Signed-off-by: David S. Miller <davem@...emloft.net>
---
 include/net/inetpeer.h |    7 +++++++
 net/ipv4/inetpeer.c    |    1 +
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 2af0c63..61f2c66 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -51,6 +51,13 @@ struct inet_peer {
 
 void			inet_initpeers(void) __init;
 
+#define INETPEER_METRICS_NEW	(~(u32) 0)
+
+static inline bool inet_metrics_new(const struct inet_peer *p)
+{
+	return p->metrics[RTAX_LOCK-1] == INETPEER_METRICS_NEW;
+}
+
 /* can be called with or without local BH being disabled */
 struct inet_peer	*inet_getpeer(struct inetpeer_addr *daddr, int create);
 
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index a96e656..b6513b1 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -512,6 +512,7 @@ struct inet_peer *inet_getpeer(struct inetpeer_addr *daddr, int create)
 		atomic_set(&p->rid, 0);
 		atomic_set(&p->ip_id_count, secure_ip_id(daddr->a4));
 		p->tcp_ts_stamp = 0;
+		p->metrics[RTAX_LOCK-1] = INETPEER_METRICS_NEW;
 		INIT_LIST_HEAD(&p->unused);
 
 
-- 
1.7.3.4

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