netdev - [PATCH net-next 2/6] bridge: simplify the forward_delay_store by calling store_bridge

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Date:	Wed, 16 Mar 2016 21:34:45 +0800
From:	Xin Long <lucien.xin@...il.com>
To:	network dev <netdev@...r.kernel.org>
Cc:	davem@...emloft.net,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	nikolay@...ulusnetworks.com
Subject: [PATCH net-next 2/6] bridge: simplify the forward_delay_store by calling store_bridge_parm

There are some repetitive codes in forward_delay_store, we can remove
them by calling store_bridge_parm.

Signed-off-by: Xin Long <lucien.xin@...il.com>
---
 net/bridge/br_sysfs_br.c | 27 ++++++++++-----------------
 1 file changed, 10 insertions(+), 17 deletions(-)

diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 095a751..c846bf9 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -160,29 +160,22 @@ static ssize_t group_fwd_mask_show(struct device *d,
 	return sprintf(buf, "%#x\n", br->group_fwd_mask);
 }
 
-
-static ssize_t group_fwd_mask_store(struct device *d,
-				    struct device_attribute *attr,
-				    const char *buf,
-				    size_t len)
+static int set_group_fwd_mask(struct net_bridge *br, unsigned long val)
 {
-	struct net_bridge *br = to_bridge(d);
-	char *endp;
-	unsigned long val;
-
-	if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
-		return -EPERM;
-
-	val = simple_strtoul(buf, &endp, 0);
-	if (endp == buf)
-		return -EINVAL;
-
 	if (val & BR_GROUPFWD_RESTRICTED)
 		return -EINVAL;
 
 	br->group_fwd_mask = val;
 
-	return len;
+	return 0;
+}
+
+static ssize_t group_fwd_mask_store(struct device *d,
+				    struct device_attribute *attr,
+				    const char *buf,
+				    size_t len)
+{
+	return store_bridge_parm(d, buf, len, set_group_fwd_mask);
 }
 static DEVICE_ATTR_RW(group_fwd_mask);
 
-- 
2.1.0