commit bf99f1bde3b3009af74874f3465f6861431fbb66
author YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Fri Apr 20 15:56:20 2007 -0700
committer David S. Miller <davem@sunset.davemloft.net> Wed Apr 25 22:29:10 2007 -0700
tree ec3ee5ca8e95e090d65671d74994b7729058c845
parent 628a5c561890a9a9a74dea017873530584aab06e

[IPV6] SNMP: Netlink interface.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/addrconf.c

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 1486f76..9ba9e92 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3433,6 +3433,8 @@
 			nla_total_size(4) /* IFLA_INET6_FLAGS */
 			+ nla_total_size(sizeof(struct ifla_cacheinfo))
 			+ nla_total_size(DEVCONF_MAX * 4) /* IFLA_INET6_CONF */
+			+ nla_total_size(IPSTATS_MIB_MAX * 8) /* IFLA_INET6_STATS */
+			+ nla_total_size(ICMP6_MIB_MAX * 8) /* IFLA_INET6_ICMP6STATS */
 		 );
 }
 
@@ -3440,7 +3442,7 @@
 			     u32 pid, u32 seq, int event, unsigned int flags)
 {
 	struct net_device *dev = idev->dev;
-	struct nlattr *conf;
+	struct nlattr *nla;
 	struct ifinfomsg *hdr;
 	struct nlmsghdr *nlh;
 	void *protoinfo;
@@ -3480,12 +3482,22 @@
 	ci.retrans_time = idev->nd_parms->retrans_time;
 	NLA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci);
 
-	conf = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));
-	if (conf == NULL)
+	nla = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));
+	if (nla == NULL)
 		goto nla_put_failure;
-	ipv6_store_devconf(&idev->cnf, nla_data(conf), nla_len(conf));
+	ipv6_store_devconf(&idev->cnf, nla_data(nla), nla_len(nla));
 
-	/* XXX - Statistics/MC not implemented */
+	/* XXX - MC not implemented */
+
+	nla = nla_reserve(skb, IFLA_INET6_STATS, IPSTATS_MIB_MAX * sizeof(u64));
+	if (nla == NULL)
+		goto nla_put_failure;
+	snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_STATS, nla_len(nla));
+
+	nla = nla_reserve(skb, IFLA_INET6_ICMP6STATS, ICMP6_MIB_MAX * sizeof(u64));
+	if (nla == NULL)
+		goto nla_put_failure;
+	snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla));
 
 	nla_nest_end(skb, protoinfo);
 	return nlmsg_end(skb, nlh);

net/ipv6/proc.c

diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index fa3fb50..0dc5515 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -207,6 +207,31 @@
 	.release = single_release,
 };
 
+static inline void
+__snmp6_fill_stats(u64 *stats, void **mib, int items, int bytes)
+{
+	int i;
+	int pad = bytes - sizeof(u64) * items;
+	BUG_ON(pad < 0);
+	stats[0] = items;
+	for (i = 1; i < items; i++)
+		stats[i] = (u64)fold_field(mib, i);
+	memset(&stats[items], 0, pad);
+}
+
+void
+snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype, int bytes)
+{
+	switch(attrtype) {
+	case IFLA_INET6_STATS:
+		__snmp6_fill_stats(stats, (void **)idev->stats.ipv6, IPSTATS_MIB_MAX, bytes);
+		break;
+	case IFLA_INET6_ICMP6STATS:
+		__snmp6_fill_stats(stats, (void **)idev->stats.icmpv6, ICMP6_MIB_MAX, bytes);
+		break;
+	}
+}
+
 int snmp6_register_dev(struct inet6_dev *idev)
 {
 	struct proc_dir_entry *p;
@@ -283,6 +308,13 @@
 {
 	return 0;
 }
+
+void
+snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype, int bytes)
+{
+	memset(stats, 0, sizeof(bytes));
+}
+
 #endif	/* CONFIG_PROC_FS */
 
 int snmp6_alloc_dev(struct inet6_dev *idev)