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Commit bf99f1bd authored by YOSHIFUJI Hideaki's avatar YOSHIFUJI Hideaki Committed by David S. Miller
Browse files

[IPV6] SNMP: Netlink interface. 



Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 628a5c56

include/linux/if_link.h

+1 −0
Original line number Diff line number Diff line
@@ -126,6 +126,7 @@ enum 
	IFLA_INET6_STATS,	/* statistics			*/

	IFLA_INET6_MCAST,	/* MC things. What of them?	*/

	IFLA_INET6_CACHEINFO,	/* time values and max reasm size */

	IFLA_INET6_ICMP6STATS,	/* statistics (icmpv6)		*/

	__IFLA_INET6_MAX

};

include/net/ipv6.h

+1 −0
Original line number Diff line number Diff line
@@ -172,6 +172,7 @@ int snmp6_alloc_dev(struct inet6_dev *idev); 
int snmp6_free_dev(struct inet6_dev *idev);

int snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign);

void snmp6_mib_free(void *ptr[2]);

void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype, int bytes);



struct ip6_ra_chain

{

net/ipv6/addrconf.c

+17 −5
Original line number Diff line number Diff line
@@ -3433,6 +3433,8 @@ static inline size_t inet6_if_nlmsg_size(void) 
			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 @@ static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, 
			     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 @@ static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, 
	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

+32 −0
Original line number Diff line number Diff line
@@ -207,6 +207,31 @@ static const struct file_operations snmp6_seq_fops = { 
	.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 @@ int snmp6_unregister_dev(struct inet6_dev *idev) 
{

	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)