Release 4.11 net/phonet/pn_netlink.c
/*
* File: pn_netlink.c
*
* Phonet netlink interface
*
* Copyright (C) 2008 Nokia Corporation.
*
* Authors: Sakari Ailus <sakari.ailus@nokia.com>
* Remi Denis-Courmont
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <linux/kernel.h>
#include <linux/netlink.h>
#include <linux/phonet.h>
#include <linux/slab.h>
#include <net/sock.h>
#include <net/phonet/pn_dev.h>
/* Device address handling */
static int fill_addr(struct sk_buff *skb, struct net_device *dev, u8 addr,
u32 portid, u32 seq, int event);
void phonet_address_notify(int event, struct net_device *dev, u8 addr)
{
struct sk_buff *skb;
int err = -ENOBUFS;
skb = nlmsg_new(NLMSG_ALIGN(sizeof(struct ifaddrmsg)) +
nla_total_size(1), GFP_KERNEL);
if (skb == NULL)
goto errout;
err = fill_addr(skb, dev, addr, 0, 0, event);
if (err < 0) {
WARN_ON(err == -EMSGSIZE);
kfree_skb(skb);
goto errout;
}
rtnl_notify(skb, dev_net(dev), 0,
RTNLGRP_PHONET_IFADDR, NULL, GFP_KERNEL);
return;
errout:
rtnl_set_sk_err(dev_net(dev), RTNLGRP_PHONET_IFADDR, err);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 130 | 99.24% | 2 | 66.67% |
Pablo Neira Ayuso | 1 | 0.76% | 1 | 33.33% |
Total | 131 | 100.00% | 3 | 100.00% |
static const struct nla_policy ifa_phonet_policy[IFA_MAX+1] = {
[IFA_LOCAL] = { .type = NLA_U8 },
};
static int addr_doit(struct sk_buff *skb, struct nlmsghdr *nlh)
{
struct net *net = sock_net(skb->sk);
struct nlattr *tb[IFA_MAX+1];
struct net_device *dev;
struct ifaddrmsg *ifm;
int err;
u8 pnaddr;
if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (!netlink_capable(skb, CAP_SYS_ADMIN))
return -EPERM;
ASSERT_RTNL();
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_phonet_policy);
if (err < 0)
return err;
ifm = nlmsg_data(nlh);
if (tb[IFA_LOCAL] == NULL)
return -EINVAL;
pnaddr = nla_get_u8(tb[IFA_LOCAL]);
if (pnaddr & 3)
/* Phonet addresses only have 6 high-order bits */
return -EINVAL;
dev = __dev_get_by_index(net, ifm->ifa_index);
if (dev == NULL)
return -ENODEV;
if (nlh->nlmsg_type == RTM_NEWADDR)
err = phonet_address_add(dev, pnaddr);
else
err = phonet_address_del(dev, pnaddr);
if (!err)
phonet_address_notify(nlh->nlmsg_type, dev, pnaddr);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 204 | 92.31% | 3 | 60.00% |
Eric W. Biedermann | 17 | 7.69% | 2 | 40.00% |
Total | 221 | 100.00% | 5 | 100.00% |
static int fill_addr(struct sk_buff *skb, struct net_device *dev, u8 addr,
u32 portid, u32 seq, int event)
{
struct ifaddrmsg *ifm;
struct nlmsghdr *nlh;
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*ifm), 0);
if (nlh == NULL)
return -EMSGSIZE;
ifm = nlmsg_data(nlh);
ifm->ifa_family = AF_PHONET;
ifm->ifa_prefixlen = 0;
ifm->ifa_flags = IFA_F_PERMANENT;
ifm->ifa_scope = RT_SCOPE_LINK;
ifm->ifa_index = dev->ifindex;
if (nla_put_u8(skb, IFA_LOCAL, addr))
goto nla_put_failure;
nlmsg_end(skb, nlh);
return 0;
nla_put_failure:
nlmsg_cancel(skb, nlh);
return -EMSGSIZE;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 133 | 91.72% | 2 | 40.00% |
David S. Miller | 7 | 4.83% | 1 | 20.00% |
Johannes Berg | 3 | 2.07% | 1 | 20.00% |
Eric W. Biedermann | 2 | 1.38% | 1 | 20.00% |
Total | 145 | 100.00% | 5 | 100.00% |
static int getaddr_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
{
struct phonet_device_list *pndevs;
struct phonet_device *pnd;
int dev_idx = 0, dev_start_idx = cb->args[0];
int addr_idx = 0, addr_start_idx = cb->args[1];
pndevs = phonet_device_list(sock_net(skb->sk));
rcu_read_lock();
list_for_each_entry_rcu(pnd, &pndevs->list, list) {
u8 addr;
if (dev_idx > dev_start_idx)
addr_start_idx = 0;
if (dev_idx++ < dev_start_idx)
continue;
addr_idx = 0;
for_each_set_bit(addr, pnd->addrs, 64) {
if (addr_idx++ < addr_start_idx)
continue;
if (fill_addr(skb, pnd->netdev, addr << 2,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, RTM_NEWADDR) < 0)
goto out;
}
}
out:
rcu_read_unlock();
cb->args[0] = dev_idx;
cb->args[1] = addr_idx;
return skb->len;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 183 | 97.86% | 5 | 71.43% |
Akinobu Mita | 3 | 1.60% | 1 | 14.29% |
Eric W. Biedermann | 1 | 0.53% | 1 | 14.29% |
Total | 187 | 100.00% | 7 | 100.00% |
/* Routes handling */
static int fill_route(struct sk_buff *skb, struct net_device *dev, u8 dst,
u32 portid, u32 seq, int event)
{
struct rtmsg *rtm;
struct nlmsghdr *nlh;
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*rtm), 0);
if (nlh == NULL)
return -EMSGSIZE;
rtm = nlmsg_data(nlh);
rtm->rtm_family = AF_PHONET;
rtm->rtm_dst_len = 6;
rtm->rtm_src_len = 0;
rtm->rtm_tos = 0;
rtm->rtm_table = RT_TABLE_MAIN;
rtm->rtm_protocol = RTPROT_STATIC;
rtm->rtm_scope = RT_SCOPE_UNIVERSE;
rtm->rtm_type = RTN_UNICAST;
rtm->rtm_flags = 0;
if (nla_put_u8(skb, RTA_DST, dst) ||
nla_put_u32(skb, RTA_OIF, dev->ifindex))
goto nla_put_failure;
nlmsg_end(skb, nlh);
return 0;
nla_put_failure:
nlmsg_cancel(skb, nlh);
return -EMSGSIZE;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 164 | 92.13% | 3 | 50.00% |
David S. Miller | 9 | 5.06% | 1 | 16.67% |
Johannes Berg | 3 | 1.69% | 1 | 16.67% |
Eric W. Biedermann | 2 | 1.12% | 1 | 16.67% |
Total | 178 | 100.00% | 6 | 100.00% |
void rtm_phonet_notify(int event, struct net_device *dev, u8 dst)
{
struct sk_buff *skb;
int err = -ENOBUFS;
skb = nlmsg_new(NLMSG_ALIGN(sizeof(struct ifaddrmsg)) +
nla_total_size(1) + nla_total_size(4), GFP_KERNEL);
if (skb == NULL)
goto errout;
err = fill_route(skb, dev, dst, 0, 0, event);
if (err < 0) {
WARN_ON(err == -EMSGSIZE);
kfree_skb(skb);
goto errout;
}
rtnl_notify(skb, dev_net(dev), 0,
RTNLGRP_PHONET_ROUTE, NULL, GFP_KERNEL);
return;
errout:
rtnl_set_sk_err(dev_net(dev), RTNLGRP_PHONET_ROUTE, err);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 136 | 100.00% | 2 | 100.00% |
Total | 136 | 100.00% | 2 | 100.00% |
static const struct nla_policy rtm_phonet_policy[RTA_MAX+1] = {
[RTA_DST] = { .type = NLA_U8 },
[RTA_OIF] = { .type = NLA_U32 },
};
static int route_doit(struct sk_buff *skb, struct nlmsghdr *nlh)
{
struct net *net = sock_net(skb->sk);
struct nlattr *tb[RTA_MAX+1];
struct net_device *dev;
struct rtmsg *rtm;
int err;
u8 dst;
if (!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
if (!netlink_capable(skb, CAP_SYS_ADMIN))
return -EPERM;
ASSERT_RTNL();
err = nlmsg_parse(nlh, sizeof(*rtm), tb, RTA_MAX, rtm_phonet_policy);
if (err < 0)
return err;
rtm = nlmsg_data(nlh);
if (rtm->rtm_table != RT_TABLE_MAIN || rtm->rtm_type != RTN_UNICAST)
return -EINVAL;
if (tb[RTA_DST] == NULL || tb[RTA_OIF] == NULL)
return -EINVAL;
dst = nla_get_u8(tb[RTA_DST]);
if (dst & 3) /* Phonet addresses only have 6 high-order bits */
return -EINVAL;
dev = __dev_get_by_index(net, nla_get_u32(tb[RTA_OIF]));
if (dev == NULL)
return -ENODEV;
if (nlh->nlmsg_type == RTM_NEWROUTE)
err = phonet_route_add(dev, dst);
else
err = phonet_route_del(dev, dst);
if (!err)
rtm_phonet_notify(nlh->nlmsg_type, dev, dst);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 233 | 93.20% | 1 | 33.33% |
Eric W. Biedermann | 17 | 6.80% | 2 | 66.67% |
Total | 250 | 100.00% | 3 | 100.00% |
static int route_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
u8 addr;
rcu_read_lock();
for (addr = cb->args[0]; addr < 64; addr++) {
struct net_device *dev = phonet_route_get_rcu(net, addr << 2);
if (!dev)
continue;
if (fill_route(skb, dev, addr << 2, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, RTM_NEWROUTE) < 0)
goto out;
}
out:
rcu_read_unlock();
cb->args[0] = addr;
return skb->len;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 109 | 85.16% | 1 | 25.00% |
Johannes Berg | 11 | 8.59% | 1 | 25.00% |
Eric Dumazet | 7 | 5.47% | 1 | 25.00% |
Eric W. Biedermann | 1 | 0.78% | 1 | 25.00% |
Total | 128 | 100.00% | 4 | 100.00% |
int __init phonet_netlink_register(void)
{
int err = __rtnl_register(PF_PHONET, RTM_NEWADDR, addr_doit,
NULL, NULL);
if (err)
return err;
/* Further __rtnl_register() cannot fail */
__rtnl_register(PF_PHONET, RTM_DELADDR, addr_doit, NULL, NULL);
__rtnl_register(PF_PHONET, RTM_GETADDR, NULL, getaddr_dumpit, NULL);
__rtnl_register(PF_PHONET, RTM_NEWROUTE, route_doit, NULL, NULL);
__rtnl_register(PF_PHONET, RTM_DELROUTE, route_doit, NULL, NULL);
__rtnl_register(PF_PHONET, RTM_GETROUTE, NULL, route_dumpit, NULL);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 88 | 88.00% | 3 | 75.00% |
Greg Rose | 12 | 12.00% | 1 | 25.00% |
Total | 100 | 100.00% | 4 | 100.00% |
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Rémi Denis-Courmont | 1483 | 93.68% | 10 | 47.62% |
Eric W. Biedermann | 41 | 2.59% | 3 | 14.29% |
Johannes Berg | 17 | 1.07% | 2 | 9.52% |
David S. Miller | 16 | 1.01% | 1 | 4.76% |
Greg Rose | 12 | 0.76% | 1 | 4.76% |
Eric Dumazet | 7 | 0.44% | 1 | 4.76% |
Akinobu Mita | 3 | 0.19% | 1 | 4.76% |
Tejun Heo | 3 | 0.19% | 1 | 4.76% |
Pablo Neira Ayuso | 1 | 0.06% | 1 | 4.76% |
Total | 1583 | 100.00% | 21 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.