nl802154: add support for dumping WPAN interface information
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
David S. Miller
parent
48a2f112db
commit
8e753dd0a8
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@ -111,6 +111,8 @@ enum {
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IEEE802154_RX_ENABLE_REQ, /* Not supported yet */
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IEEE802154_RX_ENABLE_CONF, /* Not supported yet */
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IEEE802154_LIST_IFACE,
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__IEEE802154_CMD_MAX,
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};
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@ -19,6 +19,7 @@
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* Written by:
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* Sergey Lapin <slapin@ossfans.org>
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* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
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* Maxim Osipov <maxim.osipov@siemens.com>
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*/
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#include <linux/kernel.h>
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@ -26,6 +27,7 @@
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#include <linux/netdevice.h>
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#include <net/netlink.h>
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#include <net/genetlink.h>
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#include <net/sock.h>
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#include <linux/nl802154.h>
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#include <net/af_ieee802154.h>
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#include <net/nl802154.h>
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@ -73,7 +75,7 @@ static int ieee802154_nl_finish(struct sk_buff *msg)
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/* XXX: nlh is right at the start of msg */
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void *hdr = genlmsg_data(NLMSG_DATA(msg->data));
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if (!genlmsg_end(msg, hdr))
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if (genlmsg_end(msg, hdr) < 0)
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goto out;
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return genlmsg_multicast(msg, 0, ieee802154_coord_mcgrp.id,
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@ -260,6 +262,35 @@ nla_put_failure:
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}
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EXPORT_SYMBOL(ieee802154_nl_scan_confirm);
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static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 pid,
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u32 seq, int flags, struct net_device *dev)
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{
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void *hdr;
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pr_debug("%s\n", __func__);
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hdr = genlmsg_put(msg, 0, seq, &ieee802154_coordinator_family, flags,
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IEEE802154_LIST_IFACE);
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if (!hdr)
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goto out;
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NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
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NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
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NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
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dev->dev_addr);
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NLA_PUT_U16(msg, IEEE802154_ATTR_SHORT_ADDR,
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ieee802154_mlme_ops(dev)->get_short_addr(dev));
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NLA_PUT_U16(msg, IEEE802154_ATTR_PAN_ID,
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ieee802154_mlme_ops(dev)->get_pan_id(dev));
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return genlmsg_end(msg, hdr);
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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out:
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return -EMSGSIZE;
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}
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/* Requests from userspace */
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static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
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{
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@ -272,7 +303,7 @@ static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
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dev = dev_get_by_name(&init_net, name);
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} else if (info->attrs[IEEE802154_ATTR_DEV_INDEX])
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dev = dev_get_by_index(&init_net,
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nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX]));
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nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX]));
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else
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return NULL;
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@ -466,6 +497,67 @@ static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
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return ret;
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}
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static int ieee802154_list_iface(struct sk_buff *skb,
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struct genl_info *info)
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{
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/* Request for interface name, index, type, IEEE address,
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PAN Id, short address */
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struct sk_buff *msg;
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struct net_device *dev = NULL;
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int rc = -ENOBUFS;
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pr_debug("%s\n", __func__);
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dev = ieee802154_nl_get_dev(info);
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if (!dev)
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return -ENODEV;
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msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
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if (!msg)
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goto out_dev;
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rc = ieee802154_nl_fill_iface(msg, info->snd_pid, info->snd_seq,
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0, dev);
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if (rc < 0)
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goto out_free;
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dev_put(dev);
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return genlmsg_unicast(&init_net, msg, info->snd_pid);
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out_free:
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nlmsg_free(msg);
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out_dev:
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dev_put(dev);
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return rc;
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}
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static int ieee802154_dump_iface(struct sk_buff *skb,
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struct netlink_callback *cb)
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{
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struct net *net = sock_net(skb->sk);
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struct net_device *dev;
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int idx;
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int s_idx = cb->args[0];
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pr_debug("%s\n", __func__);
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idx = 0;
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for_each_netdev(net, dev) {
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if (idx < s_idx || (dev->type != ARPHRD_IEEE802154))
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goto cont;
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if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).pid,
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cb->nlh->nlmsg_seq, NLM_F_MULTI, dev) < 0)
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break;
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cont:
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idx++;
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}
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cb->args[0] = idx;
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return skb->len;
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}
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#define IEEE802154_OP(_cmd, _func) \
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{ \
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.cmd = _cmd, \
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@ -475,12 +567,22 @@ static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
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.flags = GENL_ADMIN_PERM, \
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}
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#define IEEE802154_DUMP(_cmd, _func, _dump) \
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{ \
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.cmd = _cmd, \
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.policy = ieee802154_policy, \
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.doit = _func, \
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.dumpit = _dump, \
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}
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static struct genl_ops ieee802154_coordinator_ops[] = {
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IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req),
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IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp),
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IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req),
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IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req),
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IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
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IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface,
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ieee802154_dump_iface),
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};
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static int __init ieee802154_nl_init(void)
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