netdev - [PATCH net-next] net: export netdev_stats_to

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Date:	Mon, 05 Mar 2012 05:58:41 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, Junchang Wang <junchangwang@...il.com>
Subject: [PATCH net-next] net: export netdev_stats_to_stats64

Some drivers use internal netdev stats member to store part of their
stats, yet advertize ndo_get_stats64() to implement some 64bit fields.

Allow them to use netdev_stats_to_stats64() helper to make the copy of
netdev stats before they compute their 64bit counters.

Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
---
Also changed some incorrect spaces to tabs.

 net/core/dev.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 763a0ed..5ef3b65 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5834,12 +5834,12 @@ void netdev_run_todo(void)
 /* Convert net_device_stats to rtnl_link_stats64.  They have the same
  * fields in the same order, with only the type differing.
  */
-static void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64,
-				    const struct net_device_stats *netdev_stats)
+void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64,
+			     const struct net_device_stats *netdev_stats)
 {
 #if BITS_PER_LONG == 64
-        BUILD_BUG_ON(sizeof(*stats64) != sizeof(*netdev_stats));
-        memcpy(stats64, netdev_stats, sizeof(*stats64));
+	BUILD_BUG_ON(sizeof(*stats64) != sizeof(*netdev_stats));
+	memcpy(stats64, netdev_stats, sizeof(*stats64));
 #else
 	size_t i, n = sizeof(*stats64) / sizeof(u64);
 	const unsigned long *src = (const unsigned long *)netdev_stats;
@@ -5851,6 +5851,7 @@ static void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64,
 		dst[i] = src[i];
 #endif
 }
+EXPORT_SYMBOL(netdev_stats_to_stats64);
 
 /**
  *	dev_get_stats	- get network device statistics


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