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nl802154: add support for dumping WPAN interface information

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Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dmitry Baryshkov 2009-08-07 02:58:40 +00:00 committed by David S. Miller
parent 48a2f112db
commit 8e753dd0a8
2 changed files with 106 additions and 2 deletions
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2
include/linux/nl802154.h
View file

@ -111,6 +111,8 @@ enum {
IEEE802154_RX_ENABLE_REQ, /* Not supported yet */
IEEE802154_RX_ENABLE_CONF, /* Not supported yet */
IEEE802154_LIST_IFACE,
__IEEE802154_CMD_MAX,
};

104
net/ieee802154/netlink.c
View file

@ -19,6 +19,7 @@
* Written by:
* Sergey Lapin <slapin@ossfans.org>
* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
* Maxim Osipov <maxim.osipov@siemens.com>
*/
#include <linux/kernel.h>
@ -26,6 +27,7 @@
#include <linux/netdevice.h>
#include <net/netlink.h>
#include <net/genetlink.h>
#include <net/sock.h>
#include <linux/nl802154.h>
#include <net/af_ieee802154.h>
#include <net/nl802154.h>
@ -73,7 +75,7 @@ static int ieee802154_nl_finish(struct sk_buff *msg)
/* XXX: nlh is right at the start of msg */
void *hdr = genlmsg_data(NLMSG_DATA(msg->data));
if (!genlmsg_end(msg, hdr))
if (genlmsg_end(msg, hdr) < 0)
goto out;
return genlmsg_multicast(msg, 0, ieee802154_coord_mcgrp.id,
@ -260,6 +262,35 @@ nla_put_failure:
}
EXPORT_SYMBOL(ieee802154_nl_scan_confirm);
static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 pid,
u32 seq, int flags, struct net_device *dev)
{
void *hdr;
pr_debug("%s\n", __func__);
hdr = genlmsg_put(msg, 0, seq, &ieee802154_coordinator_family, flags,
IEEE802154_LIST_IFACE);
if (!hdr)
goto out;
NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr);
NLA_PUT_U16(msg, IEEE802154_ATTR_SHORT_ADDR,
ieee802154_mlme_ops(dev)->get_short_addr(dev));
NLA_PUT_U16(msg, IEEE802154_ATTR_PAN_ID,
ieee802154_mlme_ops(dev)->get_pan_id(dev));
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
out:
return -EMSGSIZE;
}
/* Requests from userspace */
static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
{
@ -466,6 +497,67 @@ static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
return ret;
}
static int ieee802154_list_iface(struct sk_buff *skb,
struct genl_info *info)
{
/* Request for interface name, index, type, IEEE address,
PAN Id, short address */
struct sk_buff *msg;
struct net_device *dev = NULL;
int rc = -ENOBUFS;
pr_debug("%s\n", __func__);
dev = ieee802154_nl_get_dev(info);
if (!dev)
return -ENODEV;
msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (!msg)
goto out_dev;
rc = ieee802154_nl_fill_iface(msg, info->snd_pid, info->snd_seq,
0, dev);
if (rc < 0)
goto out_free;
dev_put(dev);
return genlmsg_unicast(&init_net, msg, info->snd_pid);
out_free:
nlmsg_free(msg);
out_dev:
dev_put(dev);
return rc;
}
static int ieee802154_dump_iface(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
struct net_device *dev;
int idx;
int s_idx = cb->args[0];
pr_debug("%s\n", __func__);
idx = 0;
for_each_netdev(net, dev) {
if (idx < s_idx || (dev->type != ARPHRD_IEEE802154))
goto cont;
if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq, NLM_F_MULTI, dev) < 0)
break;
cont:
idx++;
}
cb->args[0] = idx;
return skb->len;
}
#define IEEE802154_OP(_cmd, _func) \
{ \
.cmd = _cmd, \
@ -475,12 +567,22 @@ static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
.flags = GENL_ADMIN_PERM, \
}
#define IEEE802154_DUMP(_cmd, _func, _dump) \
{ \
.cmd = _cmd, \
.policy = ieee802154_policy, \
.doit = _func, \
.dumpit = _dump, \
}
static struct genl_ops ieee802154_coordinator_ops[] = {
IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req),
IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp),
IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req),
IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req),
IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface,
ieee802154_dump_iface),
};
static int __init ieee802154_nl_init(void)