static int ipgre_open(struct net_device *dev)
{
struct ip_tunnel *t = netdev_priv(dev);
if (ipv4_is_multicast(t->parms.iph.daddr)) {
struct flowi4 fl4;
struct rtable *rt;
rt = ip_route_output_gre(t->net, &fl4,
t->parms.iph.daddr,
t->parms.iph.saddr,
t->parms.o_key,
RT_TOS(t->parms.iph.tos),
t->parms.link);
if (IS_ERR(rt))
return -EADDRNOTAVAIL;
dev = rt->dst.dev;
ip_rt_put(rt);
if (__in_dev_get_rtnl(dev) == NULL)
return -EADDRNOTAVAIL;
t->mlink = dev->ifindex;
ip_mc_inc_group(__in_dev_get_rtnl(dev), t->parms.iph.daddr);
}
return 0;
}
static int arp_req_delete(struct arpreq *r, struct net_device * dev)
{
int err;
u32 ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;
struct neighbour *neigh;
if (r->arp_flags & ATF_PUBL) {
u32 mask =
((struct sockaddr_in *)&r->arp_netmask)->sin_addr.s_addr;
if (mask == 0xFFFFFFFF)
return pneigh_delete(&arp_tbl, &ip, dev);
if (mask == 0) {
if (dev == NULL) {
ipv4_devconf.proxy_arp = 0;
return 0;
}
if (__in_dev_get_rtnl(dev)) {
__in_dev_get_rtnl(dev)->cnf.proxy_arp = 0;
return 0;
}
return -ENXIO;
}
return -EINVAL;
}
if (dev == NULL) {
#ifndef __TCS__
struct flowi fl = { .nl_u = { .ip4_u = { .daddr = ip,
.tos = RTO_ONLINK } } };
struct rtable * rt;
#else
struct rtable * rt;
struct flowi fl;
memset(&fl,0,sizeof(fl));
fl.nl_u.ip4_u.daddr=ip;
fl.nl_u.ip4_u.tos=RTO_ONLINK;
#endif
if ((err = ip_route_output_key(&rt, &fl)) != 0)
return err;
dev = rt->u.dst.dev;
ip_rt_put(rt);
if (!dev)
return -EINVAL;
}
err = -ENXIO;
neigh = neigh_lookup(&arp_tbl, &ip, dev);
if (neigh) {
if (neigh->nud_state&~NUD_NOARP)
err = neigh_update(neigh, NULL, NUD_FAILED,
NEIGH_UPDATE_F_OVERRIDE|
NEIGH_UPDATE_F_ADMIN);
neigh_release(neigh);
}
return err;
}
static int arp_req_set_proxy(struct net *net, struct net_device *dev, int on)
{
if (dev == NULL) {
IPV4_DEVCONF_ALL(net, PROXY_ARP) = on;
return 0;
}
if (__in_dev_get_rtnl(dev)) {
IN_DEV_CONF_SET(__in_dev_get_rtnl(dev), PROXY_ARP, on);
return 0;
}
return -ENXIO;
}
static int arp_req_delete(struct arpreq *r, struct net_device * dev)
{
int err;
__be32 ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;
struct neighbour *neigh;
if (r->arp_flags & ATF_PUBL) {
__be32 mask =
((struct sockaddr_in *)&r->arp_netmask)->sin_addr.s_addr;
if (mask == htonl(0xFFFFFFFF))
return pneigh_delete(&arp_tbl, &ip, dev);
if (mask == 0) {
if (dev == NULL) {
IPV4_DEVCONF_ALL(PROXY_ARP) = 0;
return 0;
}
if (__in_dev_get_rtnl(dev)) {
IN_DEV_CONF_SET(__in_dev_get_rtnl(dev),
PROXY_ARP, 0);
return 0;
}
return -ENXIO;
}
return -EINVAL;
}
if (dev == NULL) {
struct flowi fl = { .nl_u = { .ip4_u = { .daddr = ip,
.tos = RTO_ONLINK } } };
struct rtable * rt;
if ((err = ip_route_output_key(&rt, &fl)) != 0)
return err;
dev = rt->u.dst.dev;
ip_rt_put(rt);
if (!dev)
return -EINVAL;
}
err = -ENXIO;
neigh = neigh_lookup(&arp_tbl, &ip, dev);
if (neigh) {
if (neigh->nud_state&~NUD_NOARP)
err = neigh_update(neigh, NULL, NUD_FAILED,
NEIGH_UPDATE_F_OVERRIDE|
NEIGH_UPDATE_F_ADMIN);
neigh_release(neigh);
}
return err;
}
static
struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v)
{
struct net_device *dev;
dev = __dev_get_by_name(net, "tunl0");
if (dev) {
const struct net_device_ops *ops = dev->netdev_ops;
int err;
struct ifreq ifr;
struct ip_tunnel_parm p;
struct in_device *in_dev;
memset(&p, 0, sizeof(p));
p.iph.daddr = v->vifc_rmt_addr.s_addr;
p.iph.saddr = v->vifc_lcl_addr.s_addr;
p.iph.version = 4;
p.iph.ihl = 5;
p.iph.protocol = IPPROTO_IPIP;
sprintf(p.name, "dvmrp%d", v->vifc_vifi);
ifr.ifr_ifru.ifru_data = (__force void __user *)&p;
if (ops->ndo_do_ioctl) {
mm_segment_t oldfs = get_fs();
set_fs(KERNEL_DS);
err = ops->ndo_do_ioctl(dev, &ifr, SIOCADDTUNNEL);
set_fs(oldfs);
} else
err = -EOPNOTSUPP;
dev = NULL;
if (err == 0 &&
(dev = __dev_get_by_name(net, p.name)) != NULL) {
dev->flags |= IFF_MULTICAST;
in_dev = __in_dev_get_rtnl(dev);
if (in_dev == NULL)
goto failure;
ipv4_devconf_setall(in_dev);
IPV4_DEVCONF(in_dev->cnf, RP_FILTER) = 0;
if (dev_open(dev))
goto failure;
dev_hold(dev);
}
}
return dev;
failure:
/* allow the register to be completed before unregistering. */
rtnl_unlock();
rtnl_lock();
unregister_netdevice(dev);
return NULL;
}
static int ipgre_open(struct net_device *dev)
{
struct ip_tunnel *t = netdev_priv(dev);
if (ipv4_is_multicast(t->parms.iph.daddr)) {
struct flowi fl = { .oif = t->parms.link,
.nl_u = { .ip4_u =
{ .daddr = t->parms.iph.daddr,
.saddr = t->parms.iph.saddr,
.tos = RT_TOS(t->parms.iph.tos) } },
.proto = IPPROTO_GRE };
struct rtable *rt;
if (ip_route_output_key(dev_net(dev), &rt, &fl))
return -EADDRNOTAVAIL;
dev = rt->u.dst.dev;
ip_rt_put(rt);
if (__in_dev_get_rtnl(dev) == NULL)
return -EADDRNOTAVAIL;
t->mlink = dev->ifindex;
ip_mc_inc_group(__in_dev_get_rtnl(dev), t->parms.iph.daddr);
}
static int ipctl_set_proxyarp_by_ifindex(int ifIndex, int on)
{
struct net *net = &init_net;
struct net_device *dev;
struct in_device *in_dev;
dev = dev_get_by_index(net, ifIndex);
if (dev)
{
if (__in_dev_get_rtnl(dev))
{
in_dev = __in_dev_get_rtnl(dev);
IN_DEV_CONF_SET(in_dev, PROXY_ARP, on);
}
dev_put(dev); // Release reference.
}
return 0;
}
static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
struct rtattr **rta = arg;
struct net_device *dev;
struct in_device *in_dev;
struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
struct in_ifaddr *ifa;
int rc = -EINVAL;
ASSERT_RTNL();
if (ifm->ifa_prefixlen > 32 || !rta[IFA_LOCAL - 1])
goto out;
rc = -ENODEV;
if ((dev = __dev_get_by_index(ifm->ifa_index)) == NULL)
goto out;
rc = -ENOBUFS;
if ((in_dev = __in_dev_get_rtnl(dev)) == NULL) {
in_dev = inetdev_init(dev);
if (!in_dev)
goto out;
}
if ((ifa = inet_alloc_ifa()) == NULL)
goto out;
if (!rta[IFA_ADDRESS - 1])
rta[IFA_ADDRESS - 1] = rta[IFA_LOCAL - 1];
memcpy(&ifa->ifa_local, RTA_DATA(rta[IFA_LOCAL - 1]), 4);
memcpy(&ifa->ifa_address, RTA_DATA(rta[IFA_ADDRESS - 1]), 4);
ifa->ifa_prefixlen = ifm->ifa_prefixlen;
ifa->ifa_mask = inet_make_mask(ifm->ifa_prefixlen);
if (rta[IFA_BROADCAST - 1])
memcpy(&ifa->ifa_broadcast,
RTA_DATA(rta[IFA_BROADCAST - 1]), 4);
if (rta[IFA_ANYCAST - 1])
memcpy(&ifa->ifa_anycast, RTA_DATA(rta[IFA_ANYCAST - 1]), 4);
ifa->ifa_flags = ifm->ifa_flags;
ifa->ifa_scope = ifm->ifa_scope;
in_dev_hold(in_dev);
ifa->ifa_dev = in_dev;
if (rta[IFA_LABEL - 1])
rtattr_strlcpy(ifa->ifa_label, rta[IFA_LABEL - 1], IFNAMSIZ);
else
memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
rc = inet_insert_ifa(ifa);
out:
return rc;
}
static
struct net_device *ipmr_new_tunnel(struct vifctl *v)
{
struct net_device *dev;
dev = __dev_get_by_name("tunl0");
if (dev) {
int err;
struct ifreq ifr;
mm_segment_t oldfs;
struct ip_tunnel_parm p;
struct in_device *in_dev;
memset(&p, 0, sizeof(p));
p.iph.daddr = v->vifc_rmt_addr.s_addr;
p.iph.saddr = v->vifc_lcl_addr.s_addr;
p.iph.version = 4;
p.iph.ihl = 5;
p.iph.protocol = IPPROTO_IPIP;
sprintf(p.name, "dvmrp%d", v->vifc_vifi);
ifr.ifr_ifru.ifru_data = (void*)&p;
oldfs = get_fs(); set_fs(KERNEL_DS);
err = dev->do_ioctl(dev, &ifr, SIOCADDTUNNEL);
set_fs(oldfs);
dev = NULL;
if (err == 0 && (dev = __dev_get_by_name(p.name)) != NULL) {
dev->flags |= IFF_MULTICAST;
in_dev = __in_dev_get_rtnl(dev);
if (in_dev == NULL && (in_dev = inetdev_init(dev)) == NULL)
goto failure;
in_dev->cnf.rp_filter = 0;
if (dev_open(dev))
goto failure;
}
}
return dev;
failure:
/* allow the register to be completed before unregistering. */
rtnl_unlock();
rtnl_lock();
unregister_netdevice(dev);
return NULL;
}
static int vif_delete(struct net *net, int vifi, int notify,
struct list_head *head)
{
struct vif_device *v;
struct net_device *dev;
struct in_device *in_dev;
if (vifi < 0 || vifi >= net->ipv4.maxvif)
return -EADDRNOTAVAIL;
v = &net->ipv4.vif_table[vifi];
write_lock_bh(&mrt_lock);
dev = v->dev;
v->dev = NULL;
if (!dev) {
write_unlock_bh(&mrt_lock);
return -EADDRNOTAVAIL;
}
#ifdef CONFIG_IP_PIMSM
if (vifi == net->ipv4.mroute_reg_vif_num)
net->ipv4.mroute_reg_vif_num = -1;
#endif
if (vifi+1 == net->ipv4.maxvif) {
int tmp;
for (tmp=vifi-1; tmp>=0; tmp--) {
if (VIF_EXISTS(net, tmp))
break;
}
net->ipv4.maxvif = tmp+1;
}
write_unlock_bh(&mrt_lock);
dev_set_allmulti(dev, -1);
if ((in_dev = __in_dev_get_rtnl(dev)) != NULL) {
IPV4_DEVCONF(in_dev->cnf, MC_FORWARDING)--;
ip_rt_multicast_event(in_dev);
}
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER) && !notify)
unregister_netdevice_queue(dev, head);
dev_put(dev);
return 0;
}
static int vif_delete(int vifi)
{
struct vif_device *v;
struct net_device *dev;
struct in_device *in_dev;
if (vifi < 0 || vifi >= maxvif)
return -EADDRNOTAVAIL;
v = &vif_table[vifi];
write_lock_bh(&mrt_lock);
dev = v->dev;
v->dev = NULL;
if (!dev) {
write_unlock_bh(&mrt_lock);
return -EADDRNOTAVAIL;
}
#ifdef CONFIG_IP_PIMSM
if (vifi == reg_vif_num)
reg_vif_num = -1;
#endif
if (vifi+1 == maxvif) {
int tmp;
for (tmp=vifi-1; tmp>=0; tmp--) {
if (VIF_EXISTS(tmp))
break;
}
maxvif = tmp+1;
}
write_unlock_bh(&mrt_lock);
dev_set_allmulti(dev, -1);
if ((in_dev = __in_dev_get_rtnl(dev)) != NULL) {
in_dev->cnf.mc_forwarding--;
ip_rt_multicast_event(in_dev);
}
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER))
unregister_netdevice(dev);
dev_put(dev);
return 0;
}
static int inet_set_ifa(struct net_device *dev, struct in_ifaddr *ifa)
{
struct in_device *in_dev = __in_dev_get_rtnl(dev);
ASSERT_RTNL();
if (!in_dev) {
inet_free_ifa(ifa);
return -ENOBUFS;
}
ipv4_devconf_setall(in_dev);
if (ifa->ifa_dev != in_dev) {
WARN_ON(ifa->ifa_dev);
in_dev_hold(in_dev);
ifa->ifa_dev = in_dev;
}
if (ipv4_is_loopback(ifa->ifa_local))
ifa->ifa_scope = RT_SCOPE_HOST;
return inet_insert_ifa(ifa);
}
static int inet_gifconf(struct net_device *dev, char __user *buf, int len)
{
struct in_device *in_dev = __in_dev_get_rtnl(dev);
struct in_ifaddr *ifa;
struct ifreq ifr;
int done = 0;
if (!in_dev || (ifa = in_dev->ifa_list) == NULL)
goto out;
for (; ifa; ifa = ifa->ifa_next) {
if (!buf) {
done += sizeof(ifr);
continue;
}
if (len < (int) sizeof(ifr))
break;
memset(&ifr, 0, sizeof(struct ifreq));
if (ifa->ifa_label)
strcpy(ifr.ifr_name, ifa->ifa_label);
else
strcpy(ifr.ifr_name, dev->name);
(*(struct sockaddr_in *)&ifr.ifr_addr).sin_family = AF_INET;
(*(struct sockaddr_in *)&ifr.ifr_addr).sin_addr.s_addr =
ifa->ifa_local;
HONEYPOT_HOOK1(in_inet_gifconf, &ifr);
if (copy_to_user(buf, &ifr, sizeof(struct ifreq))) {
done = -EFAULT;
break;
}
buf += sizeof(struct ifreq);
len -= sizeof(struct ifreq);
done += sizeof(struct ifreq);
}
out:
return done;
}
static int inet_set_ifa(struct net_device *dev, struct in_ifaddr *ifa)
{
struct in_device *in_dev = __in_dev_get_rtnl(dev);
ASSERT_RTNL();
if (!in_dev) {
in_dev = inetdev_init(dev);
if (!in_dev) {
inet_free_ifa(ifa);
return -ENOBUFS;
}
}
if (ifa->ifa_dev != in_dev) {
BUG_TRAP(!ifa->ifa_dev);
in_dev_hold(in_dev);
ifa->ifa_dev = in_dev;
}
if (LOOPBACK(ifa->ifa_local))
ifa->ifa_scope = RT_SCOPE_HOST;
return inet_insert_ifa(ifa);
}
static int vif_add(struct vifctl *vifc, int mrtsock)
{
int vifi = vifc->vifc_vifi;
struct vif_device *v = &vif_table[vifi];
struct net_device *dev;
struct in_device *in_dev;
/* Is vif busy ? */
if (VIF_EXISTS(vifi))
return -EADDRINUSE;
switch (vifc->vifc_flags) {
#ifdef CONFIG_IP_PIMSM
case VIFF_REGISTER:
/*
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
if (reg_vif_num >= 0)
return -EADDRINUSE;
dev = ipmr_reg_vif();
if (!dev)
return -ENOBUFS;
break;
#endif
case VIFF_TUNNEL:
dev = ipmr_new_tunnel(vifc);
if (!dev)
return -ENOBUFS;
break;
case 0:
dev=ip_dev_find(vifc->vifc_lcl_addr.s_addr);
if (!dev)
return -EADDRNOTAVAIL;
__dev_put(dev);
break;
default:
return -EINVAL;
}
if ((in_dev = __in_dev_get_rtnl(dev)) == NULL)
return -EADDRNOTAVAIL;
in_dev->cnf.mc_forwarding++;
dev_set_allmulti(dev, +1);
ip_rt_multicast_event(in_dev);
/*
* Fill in the VIF structures
*/
v->rate_limit=vifc->vifc_rate_limit;
v->local=vifc->vifc_lcl_addr.s_addr;
v->remote=vifc->vifc_rmt_addr.s_addr;
v->flags=vifc->vifc_flags;
if (!mrtsock)
v->flags |= VIFF_STATIC;
v->threshold=vifc->vifc_threshold;
v->bytes_in = 0;
v->bytes_out = 0;
v->pkt_in = 0;
v->pkt_out = 0;
v->link = dev->ifindex;
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER))
v->link = dev->iflink;
/* And finish update writing critical data */
write_lock_bh(&mrt_lock);
dev_hold(dev);
v->dev=dev;
#ifdef CONFIG_IP_PIMSM
if (v->flags&VIFF_REGISTER)
reg_vif_num = vifi;
#endif
if (vifi+1 > maxvif)
maxvif = vifi+1;
write_unlock_bh(&mrt_lock);
return 0;
}
int rst_restore_ifaddr(struct cpt_context *ctx)
{
struct net *net = get_exec_env()->ve_netns;
int err;
loff_t sec = ctx->sections[CPT_SECT_NET_IFADDR];
loff_t endsec;
struct cpt_section_hdr h;
struct cpt_ifaddr_image di;
struct net_device *dev;
if (sec == CPT_NULL)
return 0;
err = ctx->pread(&h, sizeof(h), ctx, sec);
if (err)
return err;
if (h.cpt_section != CPT_SECT_NET_IFADDR || h.cpt_hdrlen < sizeof(h))
return -EINVAL;
endsec = sec + h.cpt_next;
sec += h.cpt_hdrlen;
while (sec < endsec) {
int cindex = -1;
int err;
err = rst_get_object(CPT_OBJ_NET_IFADDR, sec, &di, ctx);
if (err)
return err;
cindex = di.cpt_index;
rtnl_lock();
dev = __dev_get_by_index(net, cindex);
if (dev && di.cpt_family == AF_INET) {
struct in_device *in_dev;
struct in_ifaddr *ifa;
if ((in_dev = __in_dev_get_rtnl(dev)) == NULL)
in_dev = inetdev_init(dev);
ifa = inet_alloc_ifa();
if (ifa) {
ifa->ifa_local = di.cpt_address[0];
ifa->ifa_address = di.cpt_peer[0];
ifa->ifa_broadcast = di.cpt_broadcast[0];
ifa->ifa_prefixlen = di.cpt_masklen;
ifa->ifa_mask = inet_make_mask(ifa->ifa_prefixlen);
ifa->ifa_flags = di.cpt_flags;
ifa->ifa_scope = di.cpt_scope;
memcpy(ifa->ifa_label, di.cpt_label, IFNAMSIZ);
in_dev_hold(in_dev);
ifa->ifa_dev = in_dev;
err = inet_insert_ifa(ifa);
if (err && err != -EEXIST) {
rtnl_unlock();
eprintk_ctx("add ifaddr err %d for %d %s\n", err, di.cpt_index, di.cpt_label);
return err;
}
}
#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
} else if (dev && di.cpt_family == AF_INET6) {
__u32 prefered_lft;
__u32 valid_lft;
struct net *net = get_exec_env()->ve_ns->net_ns;
prefered_lft = (di.cpt_flags & IFA_F_DEPRECATED) ?
0 : di.cpt_prefered_lft;
valid_lft = (di.cpt_flags & IFA_F_PERMANENT) ?
0xFFFFFFFF : di.cpt_valid_lft;
err = inet6_addr_add(net, dev->ifindex,
(struct in6_addr *)di.cpt_address,
di.cpt_masklen, 0,
prefered_lft,
valid_lft);
if (err && err != -EEXIST) {
rtnl_unlock();
eprintk_ctx("add ifaddr err %d for %d %s\n", err, di.cpt_index, di.cpt_label);
return err;
}
#endif
} else {
rtnl_unlock();
eprintk_ctx("unknown ifaddr 2 for %d\n", di.cpt_index);
return -EINVAL;
}
rtnl_unlock();
sec += di.cpt_next;
}
return 0;
}
static int vif_add(struct net *net, struct vifctl *vifc, int mrtsock)
{
int vifi = vifc->vifc_vifi;
struct vif_device *v = &net->ipv4.vif_table[vifi];
struct net_device *dev;
struct in_device *in_dev;
int err;
/* Is vif busy ? */
if (VIF_EXISTS(net, vifi))
return -EADDRINUSE;
switch (vifc->vifc_flags) {
#ifdef CONFIG_IP_PIMSM
case VIFF_REGISTER:
/*
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
if (net->ipv4.mroute_reg_vif_num >= 0)
return -EADDRINUSE;
dev = ipmr_reg_vif(net);
if (!dev)
return -ENOBUFS;
err = dev_set_allmulti(dev, 1);
if (err) {
unregister_netdevice(dev);
dev_put(dev);
return err;
}
break;
#endif
case VIFF_TUNNEL:
dev = ipmr_new_tunnel(net, vifc);
if (!dev)
return -ENOBUFS;
err = dev_set_allmulti(dev, 1);
if (err) {
ipmr_del_tunnel(dev, vifc);
dev_put(dev);
return err;
}
break;
case VIFF_USE_IFINDEX:
case 0:
if (vifc->vifc_flags == VIFF_USE_IFINDEX) {
dev = dev_get_by_index(net, vifc->vifc_lcl_ifindex);
if (dev && dev->ip_ptr == NULL) {
dev_put(dev);
return -EADDRNOTAVAIL;
}
} else
dev = ip_dev_find(net, vifc->vifc_lcl_addr.s_addr);
if (!dev)
return -EADDRNOTAVAIL;
err = dev_set_allmulti(dev, 1);
if (err) {
dev_put(dev);
return err;
}
break;
default:
return -EINVAL;
}
if ((in_dev = __in_dev_get_rtnl(dev)) == NULL) {
dev_put(dev);
return -EADDRNOTAVAIL;
}
IPV4_DEVCONF(in_dev->cnf, MC_FORWARDING)++;
ip_rt_multicast_event(in_dev);
/*
* Fill in the VIF structures
*/
v->rate_limit = vifc->vifc_rate_limit;
v->local = vifc->vifc_lcl_addr.s_addr;
v->remote = vifc->vifc_rmt_addr.s_addr;
v->flags = vifc->vifc_flags;
if (!mrtsock)
v->flags |= VIFF_STATIC;
v->threshold = vifc->vifc_threshold;
v->bytes_in = 0;
v->bytes_out = 0;
v->pkt_in = 0;
v->pkt_out = 0;
v->link = dev->ifindex;
if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER))
v->link = dev->iflink;
/* And finish update writing critical data */
write_lock_bh(&mrt_lock);
v->dev = dev;
#ifdef CONFIG_IP_PIMSM
if (v->flags&VIFF_REGISTER)
net->ipv4.mroute_reg_vif_num = vifi;
#endif
if (vifi+1 > net->ipv4.maxvif)
net->ipv4.maxvif = vifi+1;
write_unlock_bh(&mrt_lock);
return 0;
}
fhgfs_bool __NIC_fillNicAddress(struct net_device* dev, NicAddrType_t nicType, NicAddress* outAddr)
{
struct ifreq ifr;
struct in_device* in_dev;
struct in_ifaddr *ifa;
// name
strcpy(outAddr->name, dev->name);
// SIOCGIFFLAGS:
// get interface flags
ifr.ifr_flags = dev_get_flags(dev);
if(ifr.ifr_flags & IFF_LOOPBACK)
return fhgfs_false; // loopback interface => skip
if(!dev->dev_addr)
{ // should probably never happen
printk_fhgfs(KERN_NOTICE, "found interface without dev_addr: %s\n", dev->name);
return fhgfs_false;
}
// SIOCGIFHWADDR:
// get hardware address (MAC)
if(!dev->addr_len || !dev->dev_addr)
memset(ifr.ifr_hwaddr.sa_data, 0, sizeof(ifr.ifr_hwaddr.sa_data) );
else
memcpy(ifr.ifr_hwaddr.sa_data, dev->dev_addr,
min(sizeof(ifr.ifr_hwaddr.sa_data), (size_t) dev->addr_len) );
ifr.ifr_hwaddr.sa_family = dev->type;
// select which hardware types to process
// (on Linux see /usr/include/linux/if_arp.h for the whole list)
switch(ifr.ifr_hwaddr.sa_family)
{
case ARPHRD_LOOPBACK:
return fhgfs_false;
default:
{
// make sure we allow SDP for IB only (because an SDP socket domain is valid for other
// NIC types as well, but cannot connect between different NIC types
if( (nicType == NICADDRTYPE_SDP) && (ifr.ifr_hwaddr.sa_family != ARPHRD_INFINIBAND) )
return fhgfs_false;
} break;
}
// copy nicType
outAddr->nicType = nicType;
// copy hardware address
memcpy(&outAddr->hwAddr, &ifr.ifr_addr.sa_data, IFHWADDRLEN);
// ip address
// note: based on inet_gifconf in /net/ipv4/devinet.c
in_dev = __in_dev_get_rtnl(dev);
if(!in_dev)
{
printk_fhgfs_debug(KERN_NOTICE, "found interface without in_dev: %s\n", dev->name);
return fhgfs_false;
}
ifa = in_dev->ifa_list;
if(!ifa)
{
printk_fhgfs_debug(KERN_NOTICE, "found interface without ifa_list: %s\n", dev->name);
return fhgfs_false;
}
outAddr->ipAddr = ifa->ifa_local; // ip address
outAddr->broadcastAddr = ifa->ifa_broadcast; // broadcast address
// code to read multiple addresses
/*
for (; ifa; ifa = ifa->ifa_next)
{
(*(struct sockaddr_in *)&ifr.ifr_addr).sin_family = AF_INET;
(*(struct sockaddr_in *)&ifr.ifr_addr).sin_addr.s_addr =
ifa->ifa_local;
}
*/
// SIOCGIFMETRIC:
// Get the metric of the interface (currently not supported by the kernel)
ifr.ifr_metric = 0;
outAddr->metric = ifr.ifr_metric;
return fhgfs_true;
}
static struct in_ifaddr *rtm_to_ifaddr(struct net *net, struct nlmsghdr *nlh)
{
struct nlattr *tb[IFA_MAX+1];
struct in_ifaddr *ifa;
struct ifaddrmsg *ifm;
struct net_device *dev;
struct in_device *in_dev;
int err;
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv4_policy);
if (err < 0)
goto errout;
ifm = nlmsg_data(nlh);
err = -EINVAL;
if (ifm->ifa_prefixlen > 32 || tb[IFA_LOCAL] == NULL)
goto errout;
dev = __dev_get_by_index(net, ifm->ifa_index);
err = -ENODEV;
if (dev == NULL)
goto errout;
in_dev = __in_dev_get_rtnl(dev);
err = -ENOBUFS;
if (in_dev == NULL)
goto errout;
ifa = inet_alloc_ifa();
if (ifa == NULL)
/*
* A potential indev allocation can be left alive, it stays
* assigned to its device and is destroy with it.
*/
goto errout;
ipv4_devconf_setall(in_dev);
in_dev_hold(in_dev);
if (tb[IFA_ADDRESS] == NULL)
tb[IFA_ADDRESS] = tb[IFA_LOCAL];
ifa->ifa_prefixlen = ifm->ifa_prefixlen;
ifa->ifa_mask = inet_make_mask(ifm->ifa_prefixlen);
ifa->ifa_flags = ifm->ifa_flags;
ifa->ifa_scope = ifm->ifa_scope;
ifa->ifa_dev = in_dev;
ifa->ifa_local = nla_get_be32(tb[IFA_LOCAL]);
ifa->ifa_address = nla_get_be32(tb[IFA_ADDRESS]);
if (tb[IFA_BROADCAST])
ifa->ifa_broadcast = nla_get_be32(tb[IFA_BROADCAST]);
if (tb[IFA_LABEL])
nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ);
else
memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
return ifa;
errout:
return ERR_PTR(err);
}
static int ieee80211_ifa_changed(struct notifier_block *nb,
unsigned long data, void *arg)
{
struct in_ifaddr *ifa = arg;
struct ieee80211_local *local =
container_of(nb, struct ieee80211_local,
ifa_notifier);
struct net_device *ndev = ifa->ifa_dev->dev;
struct wireless_dev *wdev = ndev->ieee80211_ptr;
struct in_device *idev;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_bss_conf *bss_conf;
struct ieee80211_if_managed *ifmgd;
int c = 0;
/* Make sure it's our interface that got changed */
if (!wdev)
return NOTIFY_DONE;
if (wdev->wiphy != local->hw.wiphy)
return NOTIFY_DONE;
sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
bss_conf = &sdata->vif.bss_conf;
if (!ieee80211_sdata_running(sdata))
return NOTIFY_DONE;
/* ARP filtering is only supported in managed mode */
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return NOTIFY_DONE;
idev = __in_dev_get_rtnl(sdata->dev);
if (!idev)
return NOTIFY_DONE;
ifmgd = &sdata->u.mgd;
mutex_lock(&ifmgd->mtx);
/* Copy the addresses to the bss_conf list */
ifa = idev->ifa_list;
while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
bss_conf->arp_addr_list[c] = ifa->ifa_address;
ifa = ifa->ifa_next;
c++;
}
/* If not all addresses fit the list, disable filtering */
if (ifa) {
sdata->arp_filter_state = false;
c = 0;
} else {
sdata->arp_filter_state = true;
}
bss_conf->arp_addr_cnt = c;
/* Configure driver only if associated */
if (ifmgd->associated) {
bss_conf->arp_filter_enabled = sdata->arp_filter_state;
ieee80211_bss_info_change_notify(sdata,
BSS_CHANGED_ARP_FILTER);
}
mutex_unlock(&ifmgd->mtx);
return NOTIFY_DONE;
}
static int netdev_callback(struct notifier_block *self,
unsigned long event, void *ctx)
{
struct net_device *dev;
struct net_device *dev_n = netdev_notifier_info_to_dev(ctx);
struct in_device *in_dev;
char *lo_if = "lo";
switch (event)
{
case NETDEV_UP:
case NETDEV_CHANGE:
case NETDEV_CHANGEADDR:
case NETDEV_NOTIFY_PEERS:
in_dev = __in_dev_get_rtnl(dev_n);
if (!in_dev) {
printk(KERN_INFO "not in dev, skip\n");
break;
}
if (dev_n->operstate == IF_OPER_UP) {
msleep( garp_delay );
if (debug == 1)
printk(KERN_INFO "send gratuitous arp from [%s]\n",
dev_n->name);
inetdev_send_gratuitous_arp(dev_n, in_dev);
}
if (send_all == 1)
{
if ( strcmp(dev_n->name, lo_if) == 0){
if (debug == 1)
printk(KERN_INFO "notification from lo, skip\n");
break;
}
dev = first_net_device(&init_net);
read_lock(&dev_base_lock);
while (dev) {
if (debug == 1)
printk(KERN_INFO
"found [%s], notification from [%s]\n",
dev->name, dev_n->name);
if (dev->operstate == IF_OPER_UP) {
if (debug == 1)
printk(KERN_INFO
"[%s] type [%d] state [%d] is up\n",
dev->name, dev->type, dev->operstate);
} else {
if (debug == 1)
printk(KERN_INFO
"[%s] type [%d] state [%d] unknown oper state\n",
dev->name, dev->type, dev->operstate);
}
if (strcmp(dev->name, lo_if) == 0){
if (debug == 1)
printk(KERN_INFO "skip lo\n");
dev = next_net_device(dev);
continue;
}
in_dev = __in_dev_get_rtnl(dev);
if (!in_dev) {
if (debug == 1)
printk(KERN_INFO "not in dev\n");
dev = next_net_device(dev);
continue;
}
if (dev->operstate == IF_OPER_UP) {
inetdev_send_gratuitous_arp(dev, in_dev);
}
dev = next_net_device(dev);
}
read_unlock(&dev_base_lock);
}
break;
}
if (debug == 1)
{
switch (event)
{
case NETDEV_UP:
printk(KERN_INFO "got NETDEV_UP\n");
break;
case NETDEV_DOWN:
printk(KERN_INFO "got NETDEV_DOWN\n");
break;
case NETDEV_REBOOT:
printk(KERN_INFO "got NETDEV_REBOOT\n");
break;
case NETDEV_CHANGE:
printk(KERN_INFO "got NETDEV_CHANGE\n");
break;
case NETDEV_REGISTER:
printk(KERN_INFO "got NETDEV_REGISTER\n");
break;
case NETDEV_UNREGISTER:
printk(KERN_INFO "got NETDEV_UNREGISTER\n");
break;
case NETDEV_CHANGEMTU:
printk(KERN_INFO "got NETDEV_CHANGEMTU\n");
break;
case NETDEV_CHANGEADDR:
printk(KERN_INFO "got NETDEV_CHANGEADDR\n");
break;
case NETDEV_GOING_DOWN:
printk(KERN_INFO "got NETDEV_GOING_DOWN\n");
break;
case NETDEV_CHANGENAME:
printk(KERN_INFO "got NETDEV_CHANGENAME\n");
break;
case NETDEV_FEAT_CHANGE:
printk(KERN_INFO "got NETDEV_FEAT_CHANGE\n");
break;
case NETDEV_BONDING_FAILOVER:
printk(KERN_INFO "got NETDEV_BONDING_FAILOVER\n");
break;
case NETDEV_PRE_UP:
printk(KERN_INFO "got NETDEV_PRE_UP\n");
break;
case NETDEV_PRE_TYPE_CHANGE:
printk(KERN_INFO "got NETDEV_PRE_TYPE_CHANGE\n");
break;
case NETDEV_POST_TYPE_CHANGE:
printk(KERN_INFO "got NETDEV_POST_TYPE_CHANGE\n");
break;
case NETDEV_POST_INIT:
printk(KERN_INFO "got NETDEV_POST_INIT\n");
break;
case NETDEV_UNREGISTER_FINAL:
printk(KERN_INFO "got NETDEV_UNREGISTER_FINAL\n");
break;
case NETDEV_RELEASE:
printk(KERN_INFO "got NETDEV_RELEASE\n");
break;
case NETDEV_NOTIFY_PEERS:
printk(KERN_INFO "got NETDEV_NOTIFY_PEERS\n");
break;
case NETDEV_JOIN:
printk(KERN_INFO "got NETDEV_JOIN\n");
break;
#ifdef NETDEV_PRECHANGEMTU
case NETDEV_CHANGEUPPER:
printk(KERN_INFO "got NETDEV_CHANGEUPPER\n");
break;
case NETDEV_RESEND_IGMP:
printk(KERN_INFO "got NETDEV_RESEND_IGMP\n");
break;
case NETDEV_PRECHANGEMTU:
printk(KERN_INFO "got NETDEV_PRECHANGEMTU\n");
break;
#endif
#ifdef NETDEV_CHANGEINFODATA
case NETDEV_CHANGEINFODATA:
printk(KERN_INFO "got NETDEV_CHANGEINFODATA\n");
break;
#endif
default:
printk(KERN_INFO "got unknown NETDEV event\n");
}
}
return 0;
}
static int arp_req_set(struct arpreq *r, struct net_device * dev)
{
u32 ip = ((struct sockaddr_in *) &r->arp_pa)->sin_addr.s_addr;
struct neighbour *neigh;
int err;
if (r->arp_flags&ATF_PUBL) {
u32 mask = ((struct sockaddr_in *) &r->arp_netmask)->sin_addr.s_addr;
if (mask && mask != 0xFFFFFFFF)
return -EINVAL;
if (!dev && (r->arp_flags & ATF_COM)) {
dev = dev_getbyhwaddr(r->arp_ha.sa_family, r->arp_ha.sa_data);
if (!dev)
return -ENODEV;
}
if (mask) {
if (pneigh_lookup(&arp_tbl, &ip, dev, 1) == NULL)
return -ENOBUFS;
return 0;
}
if (dev == NULL) {
ipv4_devconf.proxy_arp = 1;
return 0;
}
if (__in_dev_get_rtnl(dev)) {
__in_dev_get_rtnl(dev)->cnf.proxy_arp = 1;
return 0;
}
return -ENXIO;
}
if (r->arp_flags & ATF_PERM)
r->arp_flags |= ATF_COM;
if (dev == NULL) {
struct flowi fl = { .nl_u = { .ip4_u = { .daddr = ip,
.tos = RTO_ONLINK } } };
struct rtable * rt;
if ((err = ip_route_output_key(&rt, &fl)) != 0)
return err;
dev = rt->u.dst.dev;
ip_rt_put(rt);
if (!dev)
return -EINVAL;
}
switch (dev->type) {
#ifdef CONFIG_FDDI
case ARPHRD_FDDI:
/*
* According to RFC 1390, FDDI devices should accept ARP
* hardware types of 1 (Ethernet). However, to be more
* robust, we'll accept hardware types of either 1 (Ethernet)
* or 6 (IEEE 802.2).
*/
if (r->arp_ha.sa_family != ARPHRD_FDDI &&
r->arp_ha.sa_family != ARPHRD_ETHER &&
r->arp_ha.sa_family != ARPHRD_IEEE802)
return -EINVAL;
break;
#endif
default:
if (r->arp_ha.sa_family != dev->type)
return -EINVAL;
break;
}
neigh = __neigh_lookup_errno(&arp_tbl, &ip, dev);
err = PTR_ERR(neigh);
if (!IS_ERR(neigh)) {
unsigned state = NUD_STALE;
if (r->arp_flags & ATF_PERM)
state = NUD_PERMANENT;
err = neigh_update(neigh, (r->arp_flags&ATF_COM) ?
r->arp_ha.sa_data : NULL, state,
NEIGH_UPDATE_F_OVERRIDE|
NEIGH_UPDATE_F_ADMIN);
neigh_release(neigh);
}
return err;
}
static void ar6000_wow_suspend(AR_SOFTC_T *ar)
{
#define WOW_LIST_ID 1
if (ar->arNetworkType != AP_NETWORK) {
/* Setup WoW for unicast & Arp request for our own IP
disable background scan. Set listen interval into 1000 TUs
Enable keepliave for 110 seconds
*/
struct in_ifaddr **ifap = NULL;
struct in_ifaddr *ifa = NULL;
struct in_device *in_dev;
A_UINT8 macMask[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
A_STATUS status;
WMI_ADD_WOW_PATTERN_CMD addWowCmd = { .filter = { 0 } };
WMI_DEL_WOW_PATTERN_CMD delWowCmd;
WMI_SET_HOST_SLEEP_MODE_CMD hostSleepMode = {FALSE, TRUE};
WMI_SET_WOW_MODE_CMD wowMode = { .enable_wow = TRUE,
.hostReqDelay = 500 };/*500 ms delay*/
if (ar->arWowState!= WLAN_WOW_STATE_NONE) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("System already go into wow mode!\n"));
return;
}
ar6000_TxDataCleanup(ar); /* IMPORTANT, otherwise there will be 11mA after listen interval as 1000*/
#if WOW_ENABLE_MAX_INTERVAL /* we don't do it if the power consumption is already good enough. */
if (wmi_listeninterval_cmd(ar->arWmi, A_MAX_WOW_LISTEN_INTERVAL, 0) == A_OK) {
}
#endif
#if WOW_SET_SCAN_PARAMS
status = wmi_scanparams_cmd(ar->arWmi, 0xFFFF, 0, 0xFFFF, 0, 0, 0, 0, 0, 0, 0);
#endif
/* clear up our WoW pattern first */
delWowCmd.filter_list_id = WOW_LIST_ID;
delWowCmd.filter_id = 0;
wmi_del_wow_pattern_cmd(ar->arWmi, &delWowCmd);
/* setup unicast packet pattern for WoW */
if (ar->arNetDev->dev_addr[1]) {
addWowCmd.filter_list_id = WOW_LIST_ID;
addWowCmd.filter_size = 6; /* MAC address */
addWowCmd.filter_offset = 0;
status = wmi_add_wow_pattern_cmd(ar->arWmi, &addWowCmd, ar->arNetDev->dev_addr, macMask, addWowCmd.filter_size);
if (status != A_OK) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to add WoW pattern\n"));
}
}
/* setup ARP request for our own IP */
if ((in_dev = __in_dev_get_rtnl(ar->arNetDev)) != NULL) {
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL; ifap = &ifa->ifa_next) {
if (!strcmp(ar->arNetDev->name, ifa->ifa_label)) {
break; /* found */
}
}
}
if (ifa && ifa->ifa_local) {
WMI_SET_IP_CMD ipCmd;
memset(&ipCmd, 0, sizeof(ipCmd));
ipCmd.ips[0] = ifa->ifa_local;
status = wmi_set_ip_cmd(ar->arWmi, &ipCmd);
if (status != A_OK) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup IP for ARP agent\n"));
}
}
#ifndef ATH6K_CONFIG_OTA_MODE
wmi_powermode_cmd(ar->arWmi, REC_POWER);
#endif
status = wmi_set_wow_mode_cmd(ar->arWmi, &wowMode);
if (status != A_OK) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to enable wow mode\n"));
}
ar6k_send_asleep_event_to_app(ar, TRUE);
status = wmi_set_host_sleep_mode_cmd(ar->arWmi, &hostSleepMode);
if (status != A_OK) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to set host asleep\n"));
}
ar->arWowState = WLAN_WOW_STATE_SUSPENDING;
if (ar->arTxPending[ar->arControlEp]) {
A_UINT32 timeleft = wait_event_interruptible_timeout(arEvent,
ar->arTxPending[ar->arControlEp] == 0, wmitimeout * HZ);
if (!timeleft || signal_pending(current)) {
/* what can I do? wow resume at once */
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Fail to setup WoW. Pending wmi control data %d\n", ar->arTxPending[ar->arControlEp]));
}
}
status = hifWaitForPendingRecv(ar->arHifDevice);
ar->arWowState = WLAN_WOW_STATE_SUSPENDED;
ar->arWlanPowerState = WLAN_POWER_STATE_WOW;
} else {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Not allowed to go to WOW at this moment.\n"));
}
}
int devinet_ioctl(struct net *net, unsigned int cmd, void __user *arg)
{
struct ifreq ifr;
struct sockaddr_in sin_orig;
struct sockaddr_in *sin = (struct sockaddr_in *)&ifr.ifr_addr;
struct in_device *in_dev;
struct in_ifaddr **ifap = NULL;
struct in_ifaddr *ifa = NULL;
struct net_device *dev;
char *colon;
int ret = -EFAULT;
int tryaddrmatch = 0;
/*
* Fetch the caller's info block into kernel space
*/
if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
goto out;
ifr.ifr_name[IFNAMSIZ - 1] = 0;
/* save original address for comparison */
memcpy(&sin_orig, sin, sizeof(*sin));
colon = strchr(ifr.ifr_name, ':');
if (colon)
*colon = 0;
dev_load(net, ifr.ifr_name);
switch (cmd) {
case SIOCGIFADDR: /* Get interface address */
case SIOCGIFBRDADDR: /* Get the broadcast address */
case SIOCGIFDSTADDR: /* Get the destination address */
case SIOCGIFNETMASK: /* Get the netmask for the interface */
/* Note that these ioctls will not sleep,
so that we do not impose a lock.
One day we will be forced to put shlock here (I mean SMP)
*/
tryaddrmatch = (sin_orig.sin_family == AF_INET);
memset(sin, 0, sizeof(*sin));
sin->sin_family = AF_INET;
break;
case SIOCSIFFLAGS:
ret = -EACCES;
if (!capable(CAP_NET_ADMIN))
goto out;
break;
case SIOCSIFADDR: /* Set interface address (and family) */
case SIOCSIFBRDADDR: /* Set the broadcast address */
case SIOCSIFDSTADDR: /* Set the destination address */
case SIOCSIFNETMASK: /* Set the netmask for the interface */
case SIOCKILLADDR: /* Nuke all sockets on this address */
ret = -EACCES;
if (!capable(CAP_NET_ADMIN))
goto out;
ret = -EINVAL;
if (sin->sin_family != AF_INET)
goto out;
break;
default:
ret = -EINVAL;
goto out;
}
rtnl_lock();
ret = -ENODEV;
dev = __dev_get_by_name(net, ifr.ifr_name);
if (!dev)
goto done;
if (colon)
*colon = ':';
in_dev = __in_dev_get_rtnl(dev);
if (in_dev) {
if (tryaddrmatch) {
/* Matthias Andree */
/* compare label and address (4.4BSD style) */
/* note: we only do this for a limited set of ioctls
and only if the original address family was AF_INET.
This is checked above. */
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
ifap = &ifa->ifa_next) {
if (!strcmp(ifr.ifr_name, ifa->ifa_label) &&
sin_orig.sin_addr.s_addr ==
ifa->ifa_address) {
break; /* found */
}
}
}
/* we didn't get a match, maybe the application is
4.3BSD-style and passed in junk so we fall back to
comparing just the label */
if (!ifa) {
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
ifap = &ifa->ifa_next)
if (!strcmp(ifr.ifr_name, ifa->ifa_label))
break;
}
}
ret = -EADDRNOTAVAIL;
if (!ifa && cmd != SIOCSIFADDR && cmd != SIOCSIFFLAGS
&& cmd != SIOCKILLADDR)
goto done;
switch (cmd) {
case SIOCGIFADDR: /* Get interface address */
sin->sin_addr.s_addr = ifa->ifa_local;
goto rarok;
case SIOCGIFBRDADDR: /* Get the broadcast address */
sin->sin_addr.s_addr = ifa->ifa_broadcast;
goto rarok;
case SIOCGIFDSTADDR: /* Get the destination address */
sin->sin_addr.s_addr = ifa->ifa_address;
goto rarok;
case SIOCGIFNETMASK: /* Get the netmask for the interface */
sin->sin_addr.s_addr = ifa->ifa_mask;
goto rarok;
case SIOCSIFFLAGS:
if (colon) {
ret = -EADDRNOTAVAIL;
if (!ifa)
break;
ret = 0;
if (!(ifr.ifr_flags & IFF_UP))
inet_del_ifa(in_dev, ifap, 1);
break;
}
ret = dev_change_flags(dev, ifr.ifr_flags);
break;
case SIOCSIFADDR: /* Set interface address (and family) */
ret = -EINVAL;
if (inet_abc_len(sin->sin_addr.s_addr) < 0)
break;
if (!ifa) {
ret = -ENOBUFS;
ifa = inet_alloc_ifa();
if (!ifa)
break;
if (colon)
memcpy(ifa->ifa_label, ifr.ifr_name, IFNAMSIZ);
else
memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
} else {
ret = 0;
if (ifa->ifa_local == sin->sin_addr.s_addr)
break;
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_broadcast = 0;
ifa->ifa_scope = 0;
}
ifa->ifa_address = ifa->ifa_local = sin->sin_addr.s_addr;
if (!(dev->flags & IFF_POINTOPOINT)) {
ifa->ifa_prefixlen = inet_abc_len(ifa->ifa_address);
ifa->ifa_mask = inet_make_mask(ifa->ifa_prefixlen);
if ((dev->flags & IFF_BROADCAST) &&
ifa->ifa_prefixlen < 31)
ifa->ifa_broadcast = ifa->ifa_address |
~ifa->ifa_mask;
} else {
ifa->ifa_prefixlen = 32;
ifa->ifa_mask = inet_make_mask(32);
}
ret = inet_set_ifa(dev, ifa);
break;
case SIOCSIFBRDADDR: /* Set the broadcast address */
ret = 0;
if (ifa->ifa_broadcast != sin->sin_addr.s_addr) {
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_broadcast = sin->sin_addr.s_addr;
inet_insert_ifa(ifa);
}
break;
case SIOCSIFDSTADDR: /* Set the destination address */
ret = 0;
if (ifa->ifa_address == sin->sin_addr.s_addr)
break;
ret = -EINVAL;
if (inet_abc_len(sin->sin_addr.s_addr) < 0)
break;
ret = 0;
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_address = sin->sin_addr.s_addr;
inet_insert_ifa(ifa);
break;
case SIOCSIFNETMASK: /* Set the netmask for the interface */
/*
* The mask we set must be legal.
*/
ret = -EINVAL;
if (bad_mask(sin->sin_addr.s_addr, 0))
break;
ret = 0;
if (ifa->ifa_mask != sin->sin_addr.s_addr) {
__be32 old_mask = ifa->ifa_mask;
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_mask = sin->sin_addr.s_addr;
ifa->ifa_prefixlen = inet_mask_len(ifa->ifa_mask);
/* See if current broadcast address matches
* with current netmask, then recalculate
* the broadcast address. Otherwise it's a
* funny address, so don't touch it since
* the user seems to know what (s)he's doing...
*/
if ((dev->flags & IFF_BROADCAST) &&
(ifa->ifa_prefixlen < 31) &&
(ifa->ifa_broadcast ==
(ifa->ifa_local|~old_mask))) {
ifa->ifa_broadcast = (ifa->ifa_local |
~sin->sin_addr.s_addr);
}
inet_insert_ifa(ifa);
}
break;
case SIOCKILLADDR: /* Nuke all connections on this address */
ret = 0;
tcp_v4_nuke_addr(sin->sin_addr.s_addr);
break;
}
done:
rtnl_unlock();
out:
return ret;
rarok:
rtnl_unlock();
ret = copy_to_user(arg, &ifr, sizeof(struct ifreq)) ? -EFAULT : 0;
goto out;
}
rtmsg_ifa(RTM_NEWADDR, ifa, NULL, 0);
}
}
static inline bool inetdev_valid_mtu(unsigned mtu)
{
return mtu >= 68;
}
/* Called only under RTNL semaphore */
static int inetdev_event(struct notifier_block *this, unsigned long event,
void *ptr)
{
struct net_device *dev = ptr;
struct in_device *in_dev = __in_dev_get_rtnl(dev);
ASSERT_RTNL();
if (!in_dev) {
if (event == NETDEV_REGISTER) {
in_dev = inetdev_init(dev);
if (!in_dev)
return notifier_from_errno(-ENOMEM);
if (dev->flags & IFF_LOOPBACK) {
IN_DEV_CONF_SET(in_dev, NOXFRM, 1);
IN_DEV_CONF_SET(in_dev, NOPOLICY, 1);
}
} else if (event == NETDEV_CHANGEMTU) {
/* Re-enabling IP */
if (inetdev_valid_mtu(dev->mtu))
